diff --git chrome/browser/ui/webui/net_internals/net_internals_ui.cc chrome/browser/ui/webui/net_internals/net_internals_ui.cc
index 3a72ef9..303258b 100644
--- chrome/browser/ui/webui/net_internals/net_internals_ui.cc
+++ chrome/browser/ui/webui/net_internals/net_internals_ui.cc
@@ -531,8 +531,7 @@ void NetInternalsMessageHandler::OnGetSessionNetworkStats(
     const base::ListValue* list) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   SendJavascriptCommand(
-      "receivedSessionNetworkStats",
-      chrome_browser_net::GetSessionNetworkStats(Profile::FromWebUI(web_ui())));
+      "receivedSessionNetworkStats", nullptr);
 }
 
 void NetInternalsMessageHandler::OnGetExtensionInfo(
@@ -628,9 +627,17 @@ void NetInternalsMessageHandler::IOThreadImpl::OnRendererReady(
 
   PrePopulateEventList();
 
-  // Register with network stack to observe events.
-  io_thread_->net_log()->DeprecatedAddObserver(
-      this, net::NetLogCaptureMode::IncludeCookiesAndCredentials());
+  net::NetLog* net_log = nullptr;
+  if (io_thread_)
+    net_log = io_thread_->net_log();
+  else
+    net_log = g_browser_process->net_log();
+
+  if (net_log) {
+    // Register with network stack to observe events.
+    net_log->DeprecatedAddObserver(
+        this, net::NetLogCaptureMode::IncludeCookiesAndCredentials());
+  }
 }
 
 void NetInternalsMessageHandler::IOThreadImpl::OnGetNetInfo(
@@ -1032,8 +1039,10 @@ void NetInternalsMessageHandler::IOThreadImpl::PrePopulateEventList() {
   std::set<net::URLRequestContext*> contexts;
   for (const auto& getter : context_getters_)
     contexts.insert(getter->GetURLRequestContext());
-  contexts.insert(io_thread_->globals()->proxy_script_fetcher_context.get());
-  contexts.insert(io_thread_->globals()->system_request_context.get());
+  if (io_thread_) {
+    contexts.insert(io_thread_->globals()->proxy_script_fetcher_context.get());
+    contexts.insert(io_thread_->globals()->system_request_context.get());
+  }
 
   // Add entries for ongoing network objects.
   CreateNetLogEntriesForActiveObjects(contexts, this);
diff --git content/browser/resource_context_impl.cc content/browser/resource_context_impl.cc
index 93e2890..67a1029 100644
--- content/browser/resource_context_impl.cc
+++ content/browser/resource_context_impl.cc
@@ -74,6 +74,10 @@ URLDataManagerBackend* GetURLDataManagerForResourceContext(
       context->GetUserData(kURLDataManagerBackendKeyName));
 }
 
+const void* GetURLDataManagerBackendUserDataKey() {
+  return kURLDataManagerBackendKeyName;
+}
+
 void InitializeResourceContext(BrowserContext* browser_context) {
   ResourceContext* resource_context = browser_context->GetResourceContext();
 
diff --git content/browser/resource_context_impl.h content/browser/resource_context_impl.h
index 903cc54..56ee4ea 100644
--- content/browser/resource_context_impl.h
+++ content/browser/resource_context_impl.h
@@ -28,6 +28,8 @@ CONTENT_EXPORT StreamContext* GetStreamContextForResourceContext(
 URLDataManagerBackend* GetURLDataManagerForResourceContext(
     ResourceContext* context);
 
+const void* GetURLDataManagerBackendUserDataKey();
+
 // Initialize the above data on the ResourceContext from a given BrowserContext.
 CONTENT_EXPORT void InitializeResourceContext(BrowserContext* browser_context);
 
diff --git content/browser/webui/url_data_manager.cc content/browser/webui/url_data_manager.cc
index 0a482ad..c707073 100644
--- content/browser/webui/url_data_manager.cc
+++ content/browser/webui/url_data_manager.cc
@@ -151,6 +151,11 @@ void URLDataManager::UpdateWebUIDataSource(
 }
 
 // static
+const void* URLDataManager::GetUserDataKey() {
+  return kURLDataManagerKeyName;
+}
+
+// static
 bool URLDataManager::IsScheduledForDeletion(
     const URLDataSourceImpl* data_source) {
   base::AutoLock lock(g_delete_lock.Get());
diff --git content/browser/webui/url_data_manager.h content/browser/webui/url_data_manager.h
index 5ceb74d..0c584d6 100644
--- content/browser/webui/url_data_manager.h
+++ content/browser/webui/url_data_manager.h
@@ -69,6 +69,8 @@ class CONTENT_EXPORT URLDataManager : public base::SupportsUserData::Data {
       const std::string& source_name,
       std::unique_ptr<base::DictionaryValue> update);
 
+  static const void* GetUserDataKey();
+
  private:
   friend class URLDataSourceImpl;
   friend struct DeleteURLDataSource;