diff --git chrome/browser/extensions/api/streams_private/streams_private_api.cc chrome/browser/extensions/api/streams_private/streams_private_api.cc
index 3841b7adf65d..41ca32ea5e2f 100644
--- chrome/browser/extensions/api/streams_private/streams_private_api.cc
+++ chrome/browser/extensions/api/streams_private/streams_private_api.cc
@@ -6,6 +6,7 @@
#include <utility>
+#include "cef/libcef/features/features.h"
#include "chrome/browser/extensions/extension_tab_util.h"
#include "chrome/browser/prerender/prerender_contents.h"
#include "content/public/browser/browser_thread.h"
@@ -40,6 +41,7 @@ void StreamsPrivateAPI::SendExecuteMimeTypeHandlerEvent(
if (!web_contents)
return;
+#if !BUILDFLAG(ENABLE_CEF)
// If the request was for a prerender, abort the prerender and do not
// continue. This is because plugins cancel prerender, see
// http://crbug.com/343590.
@@ -49,6 +51,7 @@ void StreamsPrivateAPI::SendExecuteMimeTypeHandlerEvent(
prerender_contents->Destroy(prerender::FINAL_STATUS_DOWNLOAD);
return;
}
+#endif // !BUILDFLAG(ENABLE_CEF)
auto* browser_context = web_contents->GetBrowserContext();
diff --git extensions/browser/extension_host.cc extensions/browser/extension_host.cc
index 524c0603c138..f10ecd683aae 100644
--- extensions/browser/extension_host.cc
+++ extensions/browser/extension_host.cc
@@ -66,11 +66,12 @@ ExtensionHost::ExtensionHost(const Extension* extension,
DCHECK(host_type == VIEW_TYPE_EXTENSION_BACKGROUND_PAGE ||
host_type == VIEW_TYPE_EXTENSION_DIALOG ||
host_type == VIEW_TYPE_EXTENSION_POPUP);
- host_contents_ = WebContents::Create(
- WebContents::CreateParams(browser_context_, site_instance)),
- content::WebContentsObserver::Observe(host_contents_.get());
+ host_contents_owned_ = WebContents::Create(
+ WebContents::CreateParams(browser_context_, site_instance));
+ host_contents_ = host_contents_owned_.get();
+ content::WebContentsObserver::Observe(host_contents_);
host_contents_->SetDelegate(this);
- SetViewType(host_contents_.get(), host_type);
+ SetViewType(host_contents_, host_type);
render_view_host_ = host_contents_->GetRenderViewHost();
@@ -85,6 +86,48 @@ ExtensionHost::ExtensionHost(const Extension* extension,
dispatcher()->set_delegate(this);
}
+ExtensionHost::ExtensionHost(ExtensionHostDelegate* delegate,
+ const Extension* extension,
+ content::BrowserContext* browser_context,
+ content::WebContents* host_contents,
+ const GURL& url,
+ ViewType host_type)
+ : delegate_(delegate),
+ extension_(extension),
+ extension_id_(extension->id()),
+ browser_context_(browser_context),
+ host_contents_(host_contents),
+ render_view_host_(nullptr),
+ is_render_view_creation_pending_(false),
+ has_loaded_once_(false),
+ document_element_available_(false),
+ initial_url_(url),
+ extension_host_type_(host_type) {
+ DCHECK(delegate);
+ DCHECK(browser_context);
+ DCHECK(host_contents);
+
+ // Not used for panels, see PanelHost.
+ DCHECK(host_type == VIEW_TYPE_EXTENSION_BACKGROUND_PAGE ||
+ host_type == VIEW_TYPE_EXTENSION_DIALOG ||
+ host_type == VIEW_TYPE_EXTENSION_POPUP);
+
+ content::WebContentsObserver::Observe(host_contents_);
+ SetViewType(host_contents_, host_type);
+
+ render_view_host_ = host_contents_->GetRenderViewHost();
+
+ // Listen for when an extension is unloaded from the same profile, as it may
+ // be the same extension that this points to.
+ ExtensionRegistry::Get(browser_context_)->AddObserver(this);
+
+ // Set up web contents observers and pref observers.
+ delegate_->OnExtensionHostCreated(host_contents_);
+
+ ExtensionWebContentsObserver::GetForWebContents(host_contents_)->
+ dispatcher()->set_delegate(this);
+}
+
ExtensionHost::~ExtensionHost() {
ExtensionRegistry::Get(browser_context_)->RemoveObserver(this);
diff --git extensions/browser/extension_host.h extensions/browser/extension_host.h
index 093fb25589a9..3e6247802c52 100644
--- extensions/browser/extension_host.h
+++ extensions/browser/extension_host.h
@@ -52,13 +52,19 @@ class ExtensionHost : public DeferredStartRenderHost,
ExtensionHost(const Extension* extension,
content::SiteInstance* site_instance,
const GURL& url, ViewType host_type);
+ ExtensionHost(ExtensionHostDelegate* delegate,
+ const Extension* extension,
+ content::BrowserContext* browser_context,
+ content::WebContents* host_contents,
+ const GURL& url,
+ ViewType host_type);
~ExtensionHost() override;
// This may be null if the extension has been or is being unloaded.
const Extension* extension() const { return extension_; }
const std::string& extension_id() const { return extension_id_; }
- content::WebContents* host_contents() const { return host_contents_.get(); }
+ content::WebContents* host_contents() const { return host_contents_; }
content::RenderViewHost* render_view_host() const;
content::RenderProcessHost* render_process_host() const;
bool has_loaded_once() const { return has_loaded_once_; }
@@ -176,7 +182,8 @@ class ExtensionHost : public DeferredStartRenderHost,
content::BrowserContext* browser_context_;
// The host for our HTML content.
- std::unique_ptr<content::WebContents> host_contents_;
+ std::unique_ptr<content::WebContents> host_contents_owned_;
+ content::WebContents* host_contents_;
// A weak pointer to the current or pending RenderViewHost. We don't access
// this through the host_contents because we want to deal with the pending
diff --git extensions/browser/extensions_browser_client.h extensions/browser/extensions_browser_client.h
index e697984786c5..dc84cfd92669 100644
--- extensions/browser/extensions_browser_client.h
+++ extensions/browser/extensions_browser_client.h
@@ -56,6 +56,7 @@ class ComponentExtensionResourceManager;
class Extension;
class ExtensionCache;
class ExtensionError;
+class ExtensionHost;
class ExtensionHostDelegate;
class ExtensionSet;
class ExtensionSystem;
@@ -195,6 +196,14 @@ class ExtensionsBrowserClient {
virtual std::unique_ptr<ExtensionHostDelegate>
CreateExtensionHostDelegate() = 0;
+ // CEF creates a custom ExtensionHost for background pages. If the return
+ // value is true and |host| is NULL then fail the background host creation.
+ virtual bool CreateBackgroundExtensionHost(
+ const Extension* extension,
+ content::BrowserContext* browser_context,
+ const GURL& url,
+ ExtensionHost** host) { return false; }
+
// Returns true if the client version has updated since the last run. Called
// once each time the extensions system is loaded per browser_context. The
// implementation may wish to use the BrowserContext to record the current
diff --git extensions/browser/process_manager.cc extensions/browser/process_manager.cc
index 3c02c62162f1..13c355db03e0 100644
--- extensions/browser/process_manager.cc
+++ extensions/browser/process_manager.cc
@@ -386,9 +386,16 @@ bool ProcessManager::CreateBackgroundHost(const Extension* extension,
return true; // TODO(kalman): return false here? It might break things...
DVLOG(1) << "CreateBackgroundHost " << extension->id();
- ExtensionHost* host =
- new ExtensionHost(extension, GetSiteInstanceForURL(url).get(), url,
- VIEW_TYPE_EXTENSION_BACKGROUND_PAGE);
+ ExtensionHost* host = nullptr;
+ if (ExtensionsBrowserClient::Get()->CreateBackgroundExtensionHost(
+ extension, browser_context_, url, &host) && !host) {
+ // Explicitly fail if the client can't create the host.
+ return false;
+ }
+ if (!host) {
+ host = new ExtensionHost(extension, GetSiteInstanceForURL(url).get(), url,
+ VIEW_TYPE_EXTENSION_BACKGROUND_PAGE);
+ }
host->CreateRenderViewSoon();
OnBackgroundHostCreated(host);
return true;