diff --git a/libcef/browser/browser_host_impl.cc b/libcef/browser/browser_host_impl.cc
index 42ae7b202..4e7aed9cb 100644
--- a/libcef/browser/browser_host_impl.cc
+++ b/libcef/browser/browser_host_impl.cc
@@ -477,50 +477,45 @@ CefRefPtr<CefBrowserHostImpl> CefBrowserHostImpl::GetBrowserForRequest(
     const net::URLRequest* request) {
   DCHECK(request);
   CEF_REQUIRE_IOT();
+
+  // When navigating the main frame a new (pre-commit) URLRequest will be
+  // created before the RenderFrameHost. Consequently we can't rely on
+  // ResourceRequestInfo::GetRenderFrameForRequest returning a valid frame
+  // ID. See https://crbug.com/776884 for background.
   int render_process_id = -1;
   int render_frame_id = MSG_ROUTING_NONE;
-
-  if (!content::ResourceRequestInfo::GetRenderFrameForRequest(
-          request, &render_process_id, &render_frame_id) ||
-      render_process_id == -1 || render_frame_id == MSG_ROUTING_NONE) {
-    return nullptr;
+  if (content::ResourceRequestInfo::GetRenderFrameForRequest(
+          request, &render_process_id, &render_frame_id) &&
+      render_process_id >= 0 && render_frame_id >= 0) {
+    return GetBrowserForFrame(render_process_id, render_frame_id);
   }
 
-  return GetBrowserForFrame(render_process_id, render_frame_id);
+  const content::ResourceRequestInfo* request_info =
+      content::ResourceRequestInfo::ForRequest(request);
+  if (request_info)
+    return GetBrowserForFrameTreeNode(request_info->GetFrameTreeNodeId());
+
+  return nullptr;
 }
 
 // static
-CefRefPtr<CefBrowserHostImpl> CefBrowserHostImpl::GetBrowserForView(
-    int render_process_id,
-    int render_routing_id) {
-  if (render_process_id == -1 || render_routing_id == MSG_ROUTING_NONE)
-    return nullptr;
-
-  if (CEF_CURRENTLY_ON_UIT()) {
-    // Use the non-thread-safe but potentially faster approach.
-    content::RenderViewHost* render_view_host =
-        content::RenderViewHost::FromID(render_process_id, render_routing_id);
-    if (!render_view_host)
-      return nullptr;
-    return GetBrowserForHost(render_view_host);
-  } else {
-    // Use the thread-safe approach.
-    bool is_guest_view = false;
-    scoped_refptr<CefBrowserInfo> info =
-        CefBrowserInfoManager::GetInstance()->GetBrowserInfoForView(
-            render_process_id, render_routing_id, &is_guest_view);
-    if (info.get() && !is_guest_view) {
-      CefRefPtr<CefBrowserHostImpl> browser = info->browser();
-      if (!browser.get()) {
-        LOG(WARNING) << "Found browser id " << info->browser_id()
-                     << " but no browser object matching view process id "
-                     << render_process_id << " and routing id "
-                     << render_routing_id;
-      }
-      return browser;
+CefRefPtr<CefBrowserHostImpl> CefBrowserHostImpl::GetBrowserForFrameTreeNode(
+    int frame_tree_node_id) {
+  // Use the thread-safe approach.
+  scoped_refptr<CefBrowserInfo> info =
+      CefBrowserInfoManager::GetInstance()->GetBrowserInfoForFrameTreeNode(
+          frame_tree_node_id);
+  if (info.get()) {
+    CefRefPtr<CefBrowserHostImpl> browser = info->browser();
+    if (!browser.get()) {
+      LOG(WARNING) << "Found browser id " << info->browser_id()
+                   << " but no browser object matching frame tree node id "
+                   << frame_tree_node_id;
     }
-    return nullptr;
+    return browser;
   }
+
+  return nullptr;
 }
 
 // static
@@ -2591,17 +2586,39 @@ void CefBrowserHostImpl::RenderFrameCreated(
     content::RenderFrameHost* render_frame_host) {
   const int render_process_id = render_frame_host->GetProcess()->GetID();
   const int render_routing_id = render_frame_host->GetRoutingID();
-  browser_info_->render_id_manager()->add_render_frame_id(render_process_id,
-                                                          render_routing_id);
+  if (!browser_info_->render_id_manager()->is_render_frame_id_match(
+          render_process_id, render_routing_id)) {
+    browser_info_->render_id_manager()->add_render_frame_id(render_process_id,
+                                                            render_routing_id);
+  }
+
+  const int frame_tree_node_id = render_frame_host->GetFrameTreeNodeId();
+  if (!browser_info_->frame_tree_node_id_manager()->is_frame_tree_node_id_match(
+          frame_tree_node_id)) {
+    browser_info_->frame_tree_node_id_manager()->add_frame_tree_node_id(
+        frame_tree_node_id);
+  }
 }
 
-void CefBrowserHostImpl::RenderFrameDeleted(
+void CefBrowserHostImpl::RenderFrameHostChanged(
+    content::RenderFrameHost* old_host,
+    content::RenderFrameHost* new_host) {
+  // Just in case RenderFrameCreated wasn't called for some reason.
+  RenderFrameCreated(new_host);
+}
+
+void CefBrowserHostImpl::FrameDeleted(
     content::RenderFrameHost* render_frame_host) {
+  // The ID entries should currently exist.
   const int render_process_id = render_frame_host->GetProcess()->GetID();
   const int render_routing_id = render_frame_host->GetRoutingID();
   browser_info_->render_id_manager()->remove_render_frame_id(render_process_id,
                                                              render_routing_id);
 
+  const int frame_tree_node_id = render_frame_host->GetFrameTreeNodeId();
+  browser_info_->frame_tree_node_id_manager()->remove_frame_tree_node_id(
+      frame_tree_node_id);
+
   if (web_contents()) {
     const bool is_main_frame = (render_frame_host->GetParent() == nullptr);
     CefBrowserContext* context =
@@ -2611,18 +2628,24 @@ void CefBrowserHostImpl::RenderFrameDeleted(
                                     is_main_frame, false);
     }
   }
+
+  base::AutoLock lock_scope(state_lock_);
+
+  const int64 frame_id = render_frame_host->GetRoutingID();
+  FrameMap::iterator it = frames_.find(frame_id);
+  if (it != frames_.end()) {
+    it->second->Detach();
+    frames_.erase(it);
+  }
+
+  if (main_frame_id_ == frame_id)
+    main_frame_id_ = CefFrameHostImpl::kInvalidFrameId;
+  if (focused_frame_id_ == frame_id)
+    focused_frame_id_ = CefFrameHostImpl::kInvalidFrameId;
 }
 
 void CefBrowserHostImpl::RenderViewCreated(
     content::RenderViewHost* render_view_host) {
-  // As of https://crrev.com/27caae83 this notification will be sent for RVHs
-  // created for provisional main frame navigations.
-
-  const int render_process_id = render_view_host->GetProcess()->GetID();
-  const int render_routing_id = render_view_host->GetRoutingID();
-  browser_info_->render_id_manager()->add_render_view_id(render_process_id,
-                                                         render_routing_id);
-
   // May be already registered if the renderer crashed previously.
   if (!registrar_->IsRegistered(
           this, content::NOTIFICATION_FOCUS_CHANGED_IN_PAGE,
@@ -2636,11 +2659,6 @@ void CefBrowserHostImpl::RenderViewCreated(
 
 void CefBrowserHostImpl::RenderViewDeleted(
     content::RenderViewHost* render_view_host) {
-  const int render_process_id = render_view_host->GetProcess()->GetID();
-  const int render_routing_id = render_view_host->GetRoutingID();
-  browser_info_->render_id_manager()->remove_render_view_id(render_process_id,
-                                                            render_routing_id);
-
   if (registrar_->IsRegistered(
           this, content::NOTIFICATION_FOCUS_CHANGED_IN_PAGE,
           content::Source<content::RenderViewHost>(render_view_host))) {
@@ -2757,23 +2775,6 @@ void CefBrowserHostImpl::DidFailLoad(
   OnLoadEnd(frame, validated_url, error_code);
 }
 
-void CefBrowserHostImpl::FrameDeleted(
-    content::RenderFrameHost* render_frame_host) {
-  base::AutoLock lock_scope(state_lock_);
-
-  const int64 frame_id = render_frame_host->GetRoutingID();
-  FrameMap::iterator it = frames_.find(frame_id);
-  if (it != frames_.end()) {
-    it->second->Detach();
-    frames_.erase(it);
-  }
-
-  if (main_frame_id_ == frame_id)
-    main_frame_id_ = CefFrameHostImpl::kInvalidFrameId;
-  if (focused_frame_id_ == frame_id)
-    focused_frame_id_ = CefFrameHostImpl::kInvalidFrameId;
-}
-
 void CefBrowserHostImpl::TitleWasSet(content::NavigationEntry* entry) {
   // |entry| may be NULL if a popup is created via window.open and never
   // navigated.
diff --git a/libcef/browser/browser_host_impl.h b/libcef/browser/browser_host_impl.h
index b024dc701..b65c97c5a 100644
--- a/libcef/browser/browser_host_impl.h
+++ b/libcef/browser/browser_host_impl.h
@@ -153,9 +153,9 @@ class CefBrowserHostImpl : public CefBrowserHost,
   // Returns the browser associated with the specified URLRequest.
   static CefRefPtr<CefBrowserHostImpl> GetBrowserForRequest(
       const net::URLRequest* request);
-  // Returns the browser associated with the specified view routing IDs.
-  static CefRefPtr<CefBrowserHostImpl> GetBrowserForView(int render_process_id,
-                                                         int render_routing_id);
+  // Returns the browser associated with the specified FrameTreeNode.
+  static CefRefPtr<CefBrowserHostImpl> GetBrowserForFrameTreeNode(
+      int frame_tree_node_id);
   // Returns the browser associated with the specified frame routing IDs.
   static CefRefPtr<CefBrowserHostImpl> GetBrowserForFrame(
       int render_process_id,
@@ -485,7 +485,9 @@ class CefBrowserHostImpl : public CefBrowserHost,
   using content::WebContentsObserver::BeforeUnloadFired;
   using content::WebContentsObserver::WasHidden;
   void RenderFrameCreated(content::RenderFrameHost* render_frame_host) override;
-  void RenderFrameDeleted(content::RenderFrameHost* render_frame_host) override;
+  void RenderFrameHostChanged(content::RenderFrameHost* old_host,
+                              content::RenderFrameHost* new_host) override;
+  void FrameDeleted(content::RenderFrameHost* render_frame_host) override;
   void RenderViewCreated(content::RenderViewHost* render_view_host) override;
   void RenderViewDeleted(content::RenderViewHost* render_view_host) override;
   void RenderViewReady() override;
@@ -497,7 +499,6 @@ class CefBrowserHostImpl : public CefBrowserHost,
                    const GURL& validated_url,
                    int error_code,
                    const base::string16& error_description) override;
-  void FrameDeleted(content::RenderFrameHost* render_frame_host) override;
   void TitleWasSet(content::NavigationEntry* entry) override;
   void PluginCrashed(const base::FilePath& plugin_path,
                      base::ProcessId plugin_pid) override;
diff --git a/libcef/browser/browser_info.cc b/libcef/browser/browser_info.cc
index 7c128f2d4..b9c465401 100644
--- a/libcef/browser/browser_info.cc
+++ b/libcef/browser/browser_info.cc
@@ -16,91 +16,104 @@ CefBrowserInfo::RenderIDManager::RenderIDManager(base::Lock* lock)
   DCHECK(lock);
 }
 
-void CefBrowserInfo::RenderIDManager::add_render_view_id(
-    int render_process_id,
-    int render_routing_id) {
-  add_render_id(&render_view_id_set_, render_process_id, render_routing_id);
-}
-
 void CefBrowserInfo::RenderIDManager::add_render_frame_id(
     int render_process_id,
     int render_routing_id) {
-  add_render_id(&render_frame_id_set_, render_process_id, render_routing_id);
-}
+  DCHECK_GT(render_process_id, 0);
+  DCHECK_GT(render_routing_id, 0);
 
-void CefBrowserInfo::RenderIDManager::remove_render_view_id(
-    int render_process_id,
-    int render_routing_id) {
-  remove_render_id(&render_view_id_set_, render_process_id, render_routing_id);
+  base::AutoLock lock_scope(*lock_);
+
+  if (!render_frame_id_set_.empty()) {
+    RenderIdSet::const_iterator it = render_frame_id_set_.find(
+        std::make_pair(render_process_id, render_routing_id));
+    DCHECK(it == render_frame_id_set_.end());
+    if (it != render_frame_id_set_.end())
+      return;
+  }
+
+  render_frame_id_set_.insert(
+      std::make_pair(render_process_id, render_routing_id));
 }
 
 void CefBrowserInfo::RenderIDManager::remove_render_frame_id(
     int render_process_id,
     int render_routing_id) {
-  remove_render_id(&render_frame_id_set_, render_process_id, render_routing_id);
-}
+  DCHECK_GT(render_process_id, 0);
+  DCHECK_GT(render_routing_id, 0);
 
-bool CefBrowserInfo::RenderIDManager::is_render_view_id_match(
-    int render_process_id,
-    int render_routing_id) const {
-  return is_render_id_match(&render_view_id_set_, render_process_id,
-                            render_routing_id);
+  base::AutoLock lock_scope(*lock_);
+
+  DCHECK(!render_frame_id_set_.empty());
+  if (render_frame_id_set_.empty())
+    return;
+
+  bool erased = render_frame_id_set_.erase(
+                    std::make_pair(render_process_id, render_routing_id)) != 0;
+  DCHECK(erased);
 }
 
 bool CefBrowserInfo::RenderIDManager::is_render_frame_id_match(
     int render_process_id,
     int render_routing_id) const {
-  return is_render_id_match(&render_frame_id_set_, render_process_id,
-                            render_routing_id);
+  base::AutoLock lock_scope(*lock_);
+
+  if (render_frame_id_set_.empty())
+    return false;
+
+  RenderIdSet::const_iterator it = render_frame_id_set_.find(
+      std::make_pair(render_process_id, render_routing_id));
+  return (it != render_frame_id_set_.end());
 }
 
-void CefBrowserInfo::RenderIDManager::add_render_id(RenderIdSet* id_set,
-                                                    int render_process_id,
-                                                    int render_routing_id) {
-  DCHECK_GT(render_process_id, 0);
-  DCHECK_GT(render_routing_id, 0);
+// CefBrowserInfo::FrameTreeNodeIDManager
+
+CefBrowserInfo::FrameTreeNodeIDManager::FrameTreeNodeIDManager(base::Lock* lock)
+    : lock_(lock) {
+  DCHECK(lock);
+}
+
+void CefBrowserInfo::FrameTreeNodeIDManager::add_frame_tree_node_id(
+    int frame_tree_node_id) {
+  DCHECK_GE(frame_tree_node_id, 0);
 
   base::AutoLock lock_scope(*lock_);
 
-  if (!id_set->empty()) {
-    RenderIdSet::const_iterator it =
-        id_set->find(std::make_pair(render_process_id, render_routing_id));
-    if (it != id_set->end())
+  if (!frame_tree_node_id_set_.empty()) {
+    FrameTreeNodeIdSet::const_iterator it =
+        frame_tree_node_id_set_.find(frame_tree_node_id);
+    DCHECK(it == frame_tree_node_id_set_.end());
+    if (it != frame_tree_node_id_set_.end())
       return;
   }
 
-  id_set->insert(std::make_pair(render_process_id, render_routing_id));
+  frame_tree_node_id_set_.insert(frame_tree_node_id);
 }
 
-void CefBrowserInfo::RenderIDManager::remove_render_id(RenderIdSet* id_set,
-                                                       int render_process_id,
-                                                       int render_routing_id) {
-  DCHECK_GT(render_process_id, 0);
-  DCHECK_GT(render_routing_id, 0);
+void CefBrowserInfo::FrameTreeNodeIDManager::remove_frame_tree_node_id(
+    int frame_tree_node_id) {
+  DCHECK_GE(frame_tree_node_id, 0);
 
   base::AutoLock lock_scope(*lock_);
 
-  DCHECK(!id_set->empty());
-  if (id_set->empty())
+  DCHECK(!frame_tree_node_id_set_.empty());
+  if (frame_tree_node_id_set_.empty())
     return;
 
-  bool erased =
-      id_set->erase(std::make_pair(render_process_id, render_routing_id)) != 0;
+  bool erased = frame_tree_node_id_set_.erase(frame_tree_node_id) != 0;
   DCHECK(erased);
 }
 
-bool CefBrowserInfo::RenderIDManager::is_render_id_match(
-    const RenderIdSet* id_set,
-    int render_process_id,
-    int render_routing_id) const {
+bool CefBrowserInfo::FrameTreeNodeIDManager::is_frame_tree_node_id_match(
+    int frame_tree_node_id) const {
   base::AutoLock lock_scope(*lock_);
 
-  if (id_set->empty())
+  if (frame_tree_node_id_set_.empty())
     return false;
 
-  RenderIdSet::const_iterator it =
-      id_set->find(std::make_pair(render_process_id, render_routing_id));
-  return (it != id_set->end());
+  FrameTreeNodeIdSet::const_iterator it =
+      frame_tree_node_id_set_.find(frame_tree_node_id);
+  return (it != frame_tree_node_id_set_.end());
 }
 
 // CefBrowserInfo
@@ -110,7 +123,8 @@ CefBrowserInfo::CefBrowserInfo(int browser_id, bool is_popup)
       is_popup_(is_popup),
       is_windowless_(false),
       render_id_manager_(&lock_),
-      guest_render_id_manager_(&lock_) {
+      guest_render_id_manager_(&lock_),
+      frame_tree_node_id_manager_(&lock_) {
   DCHECK_GT(browser_id, 0);
 }
 
diff --git a/libcef/browser/browser_info.h b/libcef/browser/browser_info.h
index 0f1646c6c..7d52ecec1 100644
--- a/libcef/browser/browser_info.h
+++ b/libcef/browser/browser_info.h
@@ -28,50 +28,61 @@ class CefBrowserInfo : public base::RefCountedThreadSafe<CefBrowserInfo> {
     explicit RenderIDManager(base::Lock* lock);
 
     // Adds an ID pair if it doesn't already exist.
-    void add_render_view_id(int render_process_id, int render_routing_id);
     void add_render_frame_id(int render_process_id, int render_routing_id);
 
     // Remove an ID pair if it exists.
-    void remove_render_view_id(int render_process_id, int render_routing_id);
     void remove_render_frame_id(int render_process_id, int render_routing_id);
 
     // Returns true if this browser matches the specified ID pair.
-    bool is_render_view_id_match(int render_process_id,
-                                 int render_routing_id) const;
     bool is_render_frame_id_match(int render_process_id,
                                   int render_routing_id) const;
 
    private:
     typedef std::set<std::pair<int, int>> RenderIdSet;
 
-    void add_render_id(RenderIdSet* id_set,
-                       int render_process_id,
-                       int render_routing_id);
-    void remove_render_id(RenderIdSet* id_set,
-                          int render_process_id,
-                          int render_routing_id);
-    bool is_render_id_match(const RenderIdSet* id_set,
-                            int render_process_id,
-                            int render_routing_id) const;
-
+    // Access to |render_frame_id_set_| must be protected by |lock_|.
     mutable base::Lock* lock_;
 
-    // The below members must be protected by |lock_|.
-
     // Set of mapped (process_id, routing_id) pairs. Keeping this set is
     // necessary for the following reasons:
-    // 1. When navigating cross-origin the new (pending) RenderViewHost will be
-    //    created before the old (current) RenderViewHost is destroyed.
+    // 1. When navigating cross-origin the new (pending) RenderFrameHost will be
+    //    created before the old (current) RenderFrameHost is destroyed.
     // 2. When canceling and asynchronously continuing navigation of the same
-    //    URL a new RenderViewHost may be created for the first (canceled)
+    //    URL a new RenderFrameHost may be created for the first (canceled)
     //    navigation and then destroyed as a result of the second (allowed)
     //    navigation.
     // 3. Out-of-process iframes have their own render IDs which must also be
     //    associated with the host browser.
-    RenderIdSet render_view_id_set_;
     RenderIdSet render_frame_id_set_;
   };
 
+  class FrameTreeNodeIDManager {
+   public:
+    explicit FrameTreeNodeIDManager(base::Lock* lock);
+
+    // Adds an ID if it doesn't already exist.
+    void add_frame_tree_node_id(int frame_tree_node_id);
+
+    // Remove an ID if it exists.
+    void remove_frame_tree_node_id(int frame_tree_node_id);
+
+    // Returns true if this browser matches the specified ID.
+    bool is_frame_tree_node_id_match(int frame_tree_node_id) const;
+
+   private:
+    typedef std::set<int> FrameTreeNodeIdSet;
+
+    // Access to |request_id_set_| must be protected by |lock_|.
+    mutable base::Lock* lock_;
+
+    // Set of mapped frame_tree_node_id values. Keeping this set is necessary
+    // because, when navigating the main frame, a new (pre-commit) URLRequest
+    // will be created before the RenderFrameHost. Consequently we can't rely
+    // on ResourceRequestInfo::GetRenderFrameForRequest returning a valid frame
+    // ID. See https://crbug.com/776884 for background.
+    FrameTreeNodeIdSet frame_tree_node_id_set_;
+  };
+
   CefBrowserInfo(int browser_id, bool is_popup);
 
   int browser_id() const { return browser_id_; };
@@ -88,6 +99,11 @@ class CefBrowserInfo : public base::RefCountedThreadSafe<CefBrowserInfo> {
     return &guest_render_id_manager_;
   }
 
+  // Returns the frame tree node ID manager for this browser.
+  FrameTreeNodeIDManager* frame_tree_node_id_manager() {
+    return &frame_tree_node_id_manager_;
+  }
+
   CefRefPtr<CefBrowserHostImpl> browser() const;
   void set_browser(CefRefPtr<CefBrowserHostImpl> browser);
 
@@ -107,6 +123,8 @@ class CefBrowserInfo : public base::RefCountedThreadSafe<CefBrowserInfo> {
   RenderIDManager render_id_manager_;
   RenderIDManager guest_render_id_manager_;
 
+  FrameTreeNodeIDManager frame_tree_node_id_manager_;
+
   // May be NULL if the browser has not yet been created or if the browser has
   // been destroyed.
   CefRefPtr<CefBrowserHostImpl> browser_;
diff --git a/libcef/browser/browser_info_manager.cc b/libcef/browser/browser_info_manager.cc
index 70530ee9b..2b50180ac 100644
--- a/libcef/browser/browser_info_manager.cc
+++ b/libcef/browser/browser_info_manager.cc
@@ -17,7 +17,6 @@
 #include "content/common/view_messages.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_process_host.h"
-#include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/child_process_host.h"
 
@@ -79,23 +78,12 @@ scoped_refptr<CefBrowserInfo> CefBrowserInfoManager::CreatePopupBrowserInfo(
     bool is_windowless) {
   base::AutoLock lock_scope(browser_info_lock_);
 
-  content::RenderViewHost* view_host = new_contents->GetRenderViewHost();
-  content::RenderFrameHost* main_frame_host = new_contents->GetMainFrame();
-
-  content::RenderProcessHost* host = view_host->GetProcess();
-
-  // The host processes may be different in the future with OOP iframes. When
-  // that happens re-visit the implementation of this class.
-  DCHECK_EQ(host, main_frame_host->GetProcess());
-
-  const int render_process_id = host->GetID();
-  const int render_view_routing_id = view_host->GetRoutingID();
-  const int render_frame_routing_id = main_frame_host->GetRoutingID();
+  content::RenderFrameHost* frame_host = new_contents->GetMainFrame();
+  const int render_process_id = frame_host->GetProcess()->GetID();
+  const int render_frame_routing_id = frame_host->GetRoutingID();
 
   scoped_refptr<CefBrowserInfo> browser_info =
       new CefBrowserInfo(++next_browser_id_, true);
-  browser_info->render_id_manager()->add_render_view_id(render_process_id,
-                                                        render_view_routing_id);
   browser_info->render_id_manager()->add_render_frame_id(
       render_process_id, render_frame_routing_id);
   browser_info_list_.push_back(browser_info);
@@ -109,7 +97,6 @@ scoped_refptr<CefBrowserInfo> CefBrowserInfoManager::CreatePopupBrowserInfo(
   for (; it != pending_new_browser_info_list_.end(); ++it) {
     PendingNewBrowserInfo* info = it->get();
     if (info->render_process_id == render_process_id &&
-        info->render_view_routing_id == render_view_routing_id &&
         info->render_frame_routing_id == render_frame_routing_id) {
       SendNewBrowserInfoResponse(render_process_id, browser_info, false,
                                  info->reply_msg);
@@ -281,11 +268,9 @@ void CefBrowserInfoManager::WebContentsCreated(
 }
 
 void CefBrowserInfoManager::OnGetNewBrowserInfo(int render_process_id,
-                                                int render_view_routing_id,
                                                 int render_frame_routing_id,
                                                 IPC::Message* reply_msg) {
   DCHECK_NE(render_process_id, content::ChildProcessHost::kInvalidUniqueID);
-  DCHECK_GT(render_view_routing_id, 0);
   DCHECK_GT(render_frame_routing_id, 0);
   DCHECK(reply_msg);
 
@@ -294,8 +279,7 @@ void CefBrowserInfoManager::OnGetNewBrowserInfo(int render_process_id,
   bool is_guest_view = false;
 
   scoped_refptr<CefBrowserInfo> browser_info = GetBrowserInfo(
-      render_process_id, render_view_routing_id, render_process_id,
-      render_frame_routing_id, &is_guest_view);
+      render_process_id, render_frame_routing_id, &is_guest_view);
 
   if (browser_info.get()) {
     // Send the response immediately.
@@ -312,7 +296,6 @@ void CefBrowserInfoManager::OnGetNewBrowserInfo(int render_process_id,
     for (; it != pending_new_browser_info_list_.end(); ++it) {
       PendingNewBrowserInfo* info = it->get();
       if (info->render_process_id == render_process_id &&
-          info->render_view_routing_id == render_view_routing_id &&
           info->render_frame_routing_id == render_frame_routing_id) {
         NOTREACHED();
       }
@@ -323,7 +306,6 @@ void CefBrowserInfoManager::OnGetNewBrowserInfo(int render_process_id,
   // Queue the request.
   std::unique_ptr<PendingNewBrowserInfo> pending(new PendingNewBrowserInfo());
   pending->render_process_id = render_process_id;
-  pending->render_view_routing_id = render_view_routing_id;
   pending->render_frame_routing_id = render_frame_routing_id;
   pending->reply_msg = reply_msg;
   pending_new_browser_info_list_.push_back(std::move(pending));
@@ -374,22 +356,31 @@ void CefBrowserInfoManager::DestroyAllBrowsers() {
 #endif
 }
 
-scoped_refptr<CefBrowserInfo> CefBrowserInfoManager::GetBrowserInfoForView(
-    int render_process_id,
-    int render_routing_id,
-    bool* is_guest_view) {
-  base::AutoLock lock_scope(browser_info_lock_);
-  return GetBrowserInfo(render_process_id, render_routing_id, 0, 0,
-                        is_guest_view);
-}
-
 scoped_refptr<CefBrowserInfo> CefBrowserInfoManager::GetBrowserInfoForFrame(
     int render_process_id,
     int render_routing_id,
     bool* is_guest_view) {
   base::AutoLock lock_scope(browser_info_lock_);
-  return GetBrowserInfo(0, 0, render_process_id, render_routing_id,
-                        is_guest_view);
+  return GetBrowserInfo(render_process_id, render_routing_id, is_guest_view);
+}
+
+scoped_refptr<CefBrowserInfo>
+CefBrowserInfoManager::GetBrowserInfoForFrameTreeNode(int frame_tree_node_id) {
+  if (frame_tree_node_id < 0)
+    return nullptr;
+
+  base::AutoLock lock_scope(browser_info_lock_);
+
+  BrowserInfoList::const_iterator it = browser_info_list_.begin();
+  for (; it != browser_info_list_.end(); ++it) {
+    const scoped_refptr<CefBrowserInfo>& browser_info = *it;
+    if (browser_info->frame_tree_node_id_manager()->is_frame_tree_node_id_match(
+            frame_tree_node_id)) {
+      return browser_info;
+    }
+  }
+
+  return nullptr;
 }
 
 void CefBrowserInfoManager::GetBrowserInfoList(BrowserInfoList& list) {
@@ -465,8 +456,6 @@ CefBrowserInfoManager::PopPendingPopup(PendingPopup::Step step,
 }
 
 scoped_refptr<CefBrowserInfo> CefBrowserInfoManager::GetBrowserInfo(
-    int render_view_process_id,
-    int render_view_routing_id,
     int render_frame_process_id,
     int render_frame_routing_id,
     bool* is_guest_view) {
@@ -475,41 +464,19 @@ scoped_refptr<CefBrowserInfo> CefBrowserInfoManager::GetBrowserInfo(
   if (is_guest_view)
     *is_guest_view = false;
 
-  const bool valid_view_ids =
-      render_view_process_id > 0 && render_view_routing_id > 0;
-  const bool valid_frame_ids =
-      render_frame_process_id > 0 && render_frame_routing_id > 0;
+  if (render_frame_process_id < 0 || render_frame_routing_id < 0)
+    return nullptr;
 
   BrowserInfoList::const_iterator it = browser_info_list_.begin();
   for (; it != browser_info_list_.end(); ++it) {
     const scoped_refptr<CefBrowserInfo>& browser_info = *it;
-    if (valid_view_ids &&
-        browser_info->render_id_manager()->is_render_view_id_match(
-            render_view_process_id, render_view_routing_id)) {
-      if (valid_frame_ids) {
-        // Make sure the frame id is also registered.
-        browser_info->render_id_manager()->add_render_frame_id(
-            render_frame_process_id, render_frame_routing_id);
-      }
-      return browser_info;
-    }
-    if (valid_frame_ids &&
-        browser_info->render_id_manager()->is_render_frame_id_match(
+    if (browser_info->render_id_manager()->is_render_frame_id_match(
             render_frame_process_id, render_frame_routing_id)) {
-      if (valid_view_ids) {
-        // Make sure the view id is also registered.
-        browser_info->render_id_manager()->add_render_view_id(
-            render_view_process_id, render_view_routing_id);
-      }
       return browser_info;
     }
     if (extensions::ExtensionsEnabled() &&
-        ((valid_view_ids &&
-          browser_info->guest_render_id_manager()->is_render_view_id_match(
-              render_view_process_id, render_view_routing_id)) ||
-         (valid_frame_ids &&
-          browser_info->guest_render_id_manager()->is_render_frame_id_match(
-              render_frame_process_id, render_frame_routing_id)))) {
+        browser_info->guest_render_id_manager()->is_render_frame_id_match(
+            render_frame_process_id, render_frame_routing_id)) {
       if (is_guest_view)
         *is_guest_view = true;
       return browser_info;
diff --git a/libcef/browser/browser_info_manager.h b/libcef/browser/browser_info_manager.h
index 15a9ffc8f..aac162fca 100644
--- a/libcef/browser/browser_info_manager.h
+++ b/libcef/browser/browser_info_manager.h
@@ -99,7 +99,6 @@ class CefBrowserInfoManager : public content::RenderProcessHostObserver {
   // already exist for traditional popup browsers depending on timing. See
   // comments on PendingPopup for more information.
   void OnGetNewBrowserInfo(int render_process_id,
-                           int render_view_routing_id,
                            int render_frame_routing_id,
                            IPC::Message* reply_msg);
 
@@ -112,17 +111,22 @@ class CefBrowserInfoManager : public content::RenderProcessHostObserver {
 
   // Retrieves the CefBrowserInfo matching the specified IDs or an empty
   // pointer if no match is found. It is allowed to add new callers of this
-  // method but consider using CefBrowserHostImpl::GetBrowserFor[View|Frame]()
+  // method but consider using CefBrowserHostImpl::GetBrowserForFrame()
   // or extensions::GetOwnerBrowserForFrame() instead.
   // |is_guest_view| will be set to true if the IDs match a guest view
   // associated with the returned browser info instead of the browser itself.
-  scoped_refptr<CefBrowserInfo> GetBrowserInfoForView(int render_process_id,
-                                                      int render_routing_id,
-                                                      bool* is_guest_view);
   scoped_refptr<CefBrowserInfo> GetBrowserInfoForFrame(int render_process_id,
                                                        int render_routing_id,
                                                        bool* is_guest_view);
 
+  // Retrieves the CefBrowserInfo matching the specified ID or an empty
+  // pointer if no match is found. It is allowed to add new callers of this
+  // method but consider using CefBrowserHostImpl::GetBrowserForRequest()
+  // instead since we generally use this mapping for URLRequests on the IO
+  // thread.
+  scoped_refptr<CefBrowserInfo> GetBrowserInfoForFrameTreeNode(
+      int frame_tree_node_id);
+
   // Retrieves all existing CefBrowserInfo objects.
   typedef std::list<scoped_refptr<CefBrowserInfo>> BrowserInfoList;
   void GetBrowserInfoList(BrowserInfoList& list);
@@ -178,9 +182,7 @@ class CefBrowserInfoManager : public content::RenderProcessHostObserver {
 
   // Retrieves the BrowserInfo matching the specified IDs. If both sets are
   // valid then this method makes sure both sets have been registered.
-  scoped_refptr<CefBrowserInfo> GetBrowserInfo(int render_view_process_id,
-                                               int render_view_routing_id,
-                                               int render_frame_process_id,
+  scoped_refptr<CefBrowserInfo> GetBrowserInfo(int render_frame_process_id,
                                                int render_frame_routing_id,
                                                bool* is_guest_view);
 
@@ -194,7 +196,6 @@ class CefBrowserInfoManager : public content::RenderProcessHostObserver {
   // Pending request for OnGetNewBrowserInfo.
   struct PendingNewBrowserInfo {
     int render_process_id;
-    int render_view_routing_id;
     int render_frame_routing_id;
     IPC::Message* reply_msg;
   };
diff --git a/libcef/browser/browser_message_filter.cc b/libcef/browser/browser_message_filter.cc
index f738f93d2..853a0590f 100644
--- a/libcef/browser/browser_message_filter.cc
+++ b/libcef/browser/browser_message_filter.cc
@@ -56,13 +56,11 @@ void CefBrowserMessageFilter::OnGetNewRenderThreadInfo(
   }
 }
 
-void CefBrowserMessageFilter::OnGetNewBrowserInfo(int render_view_routing_id,
-                                                  int render_frame_routing_id,
+void CefBrowserMessageFilter::OnGetNewBrowserInfo(int render_frame_routing_id,
                                                   IPC::Message* reply_msg) {
   if (render_process_id_ != content::ChildProcessHost::kInvalidUniqueID) {
     CefBrowserInfoManager::GetInstance()->OnGetNewBrowserInfo(
-        render_process_id_, render_view_routing_id, render_frame_routing_id,
-        reply_msg);
+        render_process_id_, render_frame_routing_id, reply_msg);
   } else {
     delete reply_msg;
   }
diff --git a/libcef/browser/browser_message_filter.h b/libcef/browser/browser_message_filter.h
index 57cae8191..c4a28e435 100644
--- a/libcef/browser/browser_message_filter.h
+++ b/libcef/browser/browser_message_filter.h
@@ -29,8 +29,7 @@ class CefBrowserMessageFilter : public content::BrowserMessageFilter {
   // Message handlers.
   void OnGetNewRenderThreadInfo(
       CefProcessHostMsg_GetNewRenderThreadInfo_Params* params);
-  void OnGetNewBrowserInfo(int render_view_routing_id,
-                           int render_frame_routing_id,
+  void OnGetNewBrowserInfo(int render_frame_routing_id,
                            IPC::Message* reply_msg);
 
   int render_process_id_;
diff --git a/libcef/browser/extensions/mime_handler_view_guest_delegate.cc b/libcef/browser/extensions/mime_handler_view_guest_delegate.cc
index 10c52a669..34cb6f369 100644
--- a/libcef/browser/extensions/mime_handler_view_guest_delegate.cc
+++ b/libcef/browser/extensions/mime_handler_view_guest_delegate.cc
@@ -54,17 +54,20 @@ void CefMimeHandlerViewGuestDelegate::OnGuestAttached(
   content::WebContents* web_contents = guest_->web_contents();
   DCHECK(web_contents);
 
-  content::RenderViewHost* view_host = web_contents->GetRenderViewHost();
-  content::RenderFrameHost* main_frame_host = web_contents->GetMainFrame();
-
   CefRefPtr<CefBrowserHostImpl> owner_browser = GetOwnerBrowser(guest_);
 
   // Associate guest state information with the owner browser.
   scoped_refptr<CefBrowserInfo> info = owner_browser->browser_info();
-  info->guest_render_id_manager()->add_render_view_id(
-      view_host->GetProcess()->GetID(), view_host->GetRoutingID());
-  info->guest_render_id_manager()->add_render_frame_id(
-      main_frame_host->GetProcess()->GetID(), main_frame_host->GetRoutingID());
+  content::RenderFrameHost* main_frame_host = web_contents->GetMainFrame();
+
+  const int render_process_id = main_frame_host->GetProcess()->GetID();
+  const int render_frame_id = main_frame_host->GetRoutingID();
+  info->guest_render_id_manager()->add_render_frame_id(render_process_id,
+                                                       render_frame_id);
+
+  const int frame_tree_node_id = main_frame_host->GetFrameTreeNodeId();
+  info->frame_tree_node_id_manager()->add_frame_tree_node_id(
+      frame_tree_node_id);
 }
 
 void CefMimeHandlerViewGuestDelegate::OnGuestDetached(
@@ -72,25 +75,25 @@ void CefMimeHandlerViewGuestDelegate::OnGuestDetached(
   content::WebContents* web_contents = guest_->web_contents();
   DCHECK(web_contents);
 
-  content::RenderViewHost* view_host = web_contents->GetRenderViewHost();
-  content::RenderFrameHost* main_frame_host = web_contents->GetMainFrame();
-
   CefRefPtr<CefBrowserHostImpl> owner_browser = GetOwnerBrowser(guest_);
 
-  const int render_process_id = main_frame_host->GetProcess()->GetID();
-  const int render_frame_id = main_frame_host->GetRoutingID();
-  const bool is_main_frame = (main_frame_host->GetParent() == nullptr);
-
   // Disassociate guest state information with the owner browser.
   scoped_refptr<CefBrowserInfo> info = owner_browser->browser_info();
-  info->guest_render_id_manager()->remove_render_view_id(
-      view_host->GetProcess()->GetID(), view_host->GetRoutingID());
+  content::RenderFrameHost* main_frame_host = web_contents->GetMainFrame();
+
+  const int render_process_id = main_frame_host->GetProcess()->GetID();
+  const int render_frame_id = main_frame_host->GetRoutingID();
   info->guest_render_id_manager()->remove_render_frame_id(render_process_id,
                                                           render_frame_id);
 
+  const int frame_tree_node_id = main_frame_host->GetFrameTreeNodeId();
+  info->frame_tree_node_id_manager()->remove_frame_tree_node_id(
+      frame_tree_node_id);
+
   CefBrowserContext* context =
       static_cast<CefBrowserContext*>(web_contents->GetBrowserContext());
   if (context) {
+    const bool is_main_frame = (main_frame_host->GetParent() == nullptr);
     context->OnRenderFrameDeleted(render_process_id, render_frame_id,
                                   is_main_frame, true);
   }
diff --git a/libcef/browser/net/url_request_interceptor.cc b/libcef/browser/net/url_request_interceptor.cc
index 757e48ddf..034e33314 100644
--- a/libcef/browser/net/url_request_interceptor.cc
+++ b/libcef/browser/net/url_request_interceptor.cc
@@ -29,6 +29,12 @@ CefRequestInterceptor::~CefRequestInterceptor() {
 net::URLRequestJob* CefRequestInterceptor::MaybeInterceptRequest(
     net::URLRequest* request,
     net::NetworkDelegate* network_delegate) const {
+  // With PlzNavigate we now receive blob URLs here.
+  // Ignore these URLs. See https://crbug.com/776884 for details.
+  if (request->url().SchemeIs(url::kBlobScheme)) {
+    return nullptr;
+  }
+
   CefRefPtr<CefBrowserHostImpl> browser =
       CefBrowserHostImpl::GetBrowserForRequest(request);
   if (browser.get()) {
diff --git a/libcef/common/cef_messages.h b/libcef/common/cef_messages.h
index 02ba89c0b..6c6502b89 100644
--- a/libcef/common/cef_messages.h
+++ b/libcef/common/cef_messages.h
@@ -202,9 +202,8 @@ IPC_STRUCT_BEGIN(CefProcessHostMsg_GetNewBrowserInfo_Params)
 IPC_STRUCT_END()
 
 // Retrieve information about a newly created browser.
-IPC_SYNC_MESSAGE_CONTROL2_1(
+IPC_SYNC_MESSAGE_CONTROL1_1(
     CefProcessHostMsg_GetNewBrowserInfo,
-    int /* render_view_routing_id */,
     int /* render_frame_routing_id */,
     CefProcessHostMsg_GetNewBrowserInfo_Params /* params*/)
 
diff --git a/libcef/renderer/browser_impl.cc b/libcef/renderer/browser_impl.cc
index 23ce29715..618cedbb0 100644
--- a/libcef/renderer/browser_impl.cc
+++ b/libcef/renderer/browser_impl.cc
@@ -26,7 +26,6 @@
 #include "content/public/renderer/navigation_state.h"
 #include "content/public/renderer/render_view.h"
 #include "content/renderer/navigation_state_impl.h"
-#include "content/renderer/render_view_impl.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/platform/WebURL.h"
 #include "third_party/WebKit/public/platform/WebURLError.h"
@@ -413,12 +412,6 @@ void CefBrowserImpl::AddFrameObject(int64_t frame_id,
   manager->Add(tracked_object);
 }
 
-bool CefBrowserImpl::is_swapped_out() const {
-  content::RenderViewImpl* render_view_impl =
-      static_cast<content::RenderViewImpl*>(render_view());
-  return (!render_view_impl || render_view_impl->is_swapped_out());
-}
-
 // RenderViewObserver methods.
 // -----------------------------------------------------------------------------
 
@@ -668,9 +661,6 @@ void CefBrowserImpl::OnResponseAck(int request_id) {
 }
 
 void CefBrowserImpl::OnLoadingStateChange(bool isLoading) {
-  if (is_swapped_out())
-    return;
-
   CefRefPtr<CefApp> app = CefContentClient::Get()->application();
   if (app.get()) {
     CefRefPtr<CefRenderProcessHandler> handler = app->GetRenderProcessHandler();
@@ -689,9 +679,6 @@ void CefBrowserImpl::OnLoadingStateChange(bool isLoading) {
 }
 
 void CefBrowserImpl::OnLoadStart(blink::WebLocalFrame* frame) {
-  if (is_swapped_out())
-    return;
-
   CefRefPtr<CefApp> app = CefContentClient::Get()->application();
   if (app.get()) {
     CefRefPtr<CefRenderProcessHandler> handler = app->GetRenderProcessHandler();
@@ -706,9 +693,6 @@ void CefBrowserImpl::OnLoadStart(blink::WebLocalFrame* frame) {
 }
 
 void CefBrowserImpl::OnLoadEnd(blink::WebLocalFrame* frame) {
-  if (is_swapped_out())
-    return;
-
   CefRefPtr<CefApp> app = CefContentClient::Get()->application();
   if (app.get()) {
     CefRefPtr<CefRenderProcessHandler> handler = app->GetRenderProcessHandler();
@@ -726,9 +710,6 @@ void CefBrowserImpl::OnLoadEnd(blink::WebLocalFrame* frame) {
 
 void CefBrowserImpl::OnLoadError(blink::WebLocalFrame* frame,
                                  const blink::WebURLError& error) {
-  if (is_swapped_out())
-    return;
-
   CefRefPtr<CefApp> app = CefContentClient::Get()->application();
   if (app.get()) {
     CefRefPtr<CefRenderProcessHandler> handler = app->GetRenderProcessHandler();
diff --git a/libcef/renderer/browser_impl.h b/libcef/renderer/browser_impl.h
index 9693ef519..b6ff9ae9a 100644
--- a/libcef/renderer/browser_impl.h
+++ b/libcef/renderer/browser_impl.h
@@ -105,8 +105,6 @@ class CefBrowserImpl : public CefBrowser, public content::RenderViewObserver {
     return content::RenderViewObserver::render_view();
   }
 
-  bool is_swapped_out() const;
-
   // RenderViewObserver methods.
   void OnDestruct() override;
   void DidStartLoading() override;
diff --git a/libcef/renderer/content_renderer_client.cc b/libcef/renderer/content_renderer_client.cc
index 81abc15cb..310f71209 100644
--- a/libcef/renderer/content_renderer_client.cc
+++ b/libcef/renderer/content_renderer_client.cc
@@ -73,7 +73,6 @@
 #include "content/public/renderer/render_thread.h"
 #include "content/public/renderer/render_view.h"
 #include "content/public/renderer/render_view_visitor.h"
-#include "content/renderer/render_frame_impl.h"
 #include "content/renderer/render_widget.h"
 #include "extensions/common/switches.h"
 #include "extensions/renderer/renderer_extension_registry.h"
@@ -837,27 +836,18 @@ void CefContentRendererClient::BrowserCreated(
   if (!render_view || !render_frame)
     return;
 
-  // Swapped out RenderWidgets will be created in the parent/owner process for
-  // frames that are hosted in a separate process (e.g. guest views or OOP
-  // frames). Don't create any CEF objects for swapped out RenderWidgets.
-  content::RenderFrameImpl* render_frame_impl =
-      static_cast<content::RenderFrameImpl*>(render_frame);
-  if (render_frame_impl->GetRenderWidget()->is_swapped_out())
-    return;
-
   // Don't create another browser or guest view object if one already exists for
   // the view.
   if (GetBrowserForView(render_view).get() || HasGuestViewForView(render_view))
     return;
 
-  const int render_view_routing_id = render_view->GetRoutingID();
   const int render_frame_routing_id = render_frame->GetRoutingID();
 
   // Retrieve the browser information synchronously. This will also register
   // the routing ids with the browser info object in the browser process.
   CefProcessHostMsg_GetNewBrowserInfo_Params params;
   content::RenderThread::Get()->Send(new CefProcessHostMsg_GetNewBrowserInfo(
-      render_view_routing_id, render_frame_routing_id, &params));
+      render_frame_routing_id, &params));
   if (params.browser_id == 0) {
     // The popup may have been canceled during creation.
     return;
diff --git a/patch/patch.cfg b/patch/patch.cfg
index b3ee60d8b..15cc069fa 100644
--- a/patch/patch.cfg
+++ b/patch/patch.cfg
@@ -215,11 +215,6 @@ patches = [
     # https://bitbucket.org/chromiumembedded/cef/issues/2102
     'name': 'views_1749_2102',
   },
-  {
-    # Expose RenderViewHostImpl swapped-out state.
-    # https://bitbucket.org/chromiumembedded/cef/issues/1392
-    'name': 'render_view_host_impl_1392',
-  },
   {
     # Expose ui::Compositor via BrowserCompositorMac for OSR.
     'name': 'browser_compositor_mac',
diff --git a/patch/patches/render_view_host_impl_1392.patch b/patch/patches/render_view_host_impl_1392.patch
deleted file mode 100644
index 1673e67f3..000000000
--- a/patch/patches/render_view_host_impl_1392.patch
+++ /dev/null
@@ -1,12 +0,0 @@
-diff --git content/browser/renderer_host/render_view_host_impl.h content/browser/renderer_host/render_view_host_impl.h
-index 071ed012bada..0957d5dda328 100644
---- content/browser/renderer_host/render_view_host_impl.h
-+++ content/browser/renderer_host/render_view_host_impl.h
-@@ -158,6 +158,7 @@ class CONTENT_EXPORT RenderViewHostImpl : public RenderViewHost,
-   void set_is_swapped_out(bool is_swapped_out) {
-     is_swapped_out_ = is_swapped_out;
-   }
-+  bool is_swapped_out() const { return is_swapped_out_; }
- 
-   // TODO(creis): Remove as part of http://crbug.com/418265.
-   bool is_waiting_for_close_ack() const { return is_waiting_for_close_ack_; }