Implement frame attribution (FrameBlamer)

content/renderer/render_frame_impl.h

Index: content/renderer/render_frame_impl.h
diff --git a/content/renderer/render_frame_impl.h b/content/renderer/render_frame_impl.h
index ed336f437d59244eeb8a7ee0d42b64d2319488f8..9da0dbff2ab03cd634f4b7e38824a606334ef6ab 100644
--- a/content/renderer/render_frame_impl.h
+++ b/content/renderer/render_frame_impl.h
@@ -29,6 +29,7 @@
 #include "content/public/common/referrer.h"
 #include "content/public/common/stop_find_action.h"
 #include "content/public/renderer/render_frame.h"
+#include "content/renderer/render_frame_blame_context.h"
 #include "content/renderer/render_frame_proxy.h"
 #include "content/renderer/renderer_webcookiejar_impl.h"
 #include "ipc/ipc_message.h"
@@ -37,6 +38,7 @@
 #include "media/blink/webmediaplayer_params.h"
 #include "mojo/shell/public/interfaces/interface_provider.mojom.h"
 #include "mojo/shell/public/interfaces/shell.mojom.h"
+#include "third_party/WebKit/public/platform/WebBlameContext.h"
 #include "third_party/WebKit/public/platform/WebFocusType.h"
 #include "third_party/WebKit/public/platform/WebMediaPlayer.h"
 #include "third_party/WebKit/public/platform/modules/app_banner/WebAppBannerClient.h"
@@ -143,6 +145,7 @@ class RenderWidgetFullscreenPepper;
 class ScreenOrientationDispatcher;
 class UserMediaClientImpl;
 class WakeLockDispatcher;
+class WebBlameContextImpl;
 struct CommonNavigationParams;
 struct CustomContextMenuContext;
 struct FrameReplicationState;
@@ -156,7 +159,9 @@ class VRDispatcher;
 class CONTENT_EXPORT RenderFrameImpl
     : public RenderFrame,
       NON_EXPORTED_BASE(public blink::WebFrameClient),
-      NON_EXPORTED_BASE(public blink::WebFrameSerializerClient) {
+      NON_EXPORTED_BASE(public blink::WebFrameSerializerClient),
+      NON_EXPORTED_BASE(
+          public base::trace_event::TraceLog::EnabledStateObserver) {
  public:
   // Creates a new RenderFrame as the main frame of |render_view|.
   static RenderFrameImpl* CreateMainFrame(
@@ -432,6 +437,7 @@ class CONTENT_EXPORT RenderFrameImpl
       const blink::WebPopupMenuInfo& popup_menu_info,
       blink::WebExternalPopupMenuClient* popup_menu_client) override;
   blink::WebCookieJar* cookieJar() override;
+  blink::WebBlameContext* frameBlameContext() override;
   blink::WebServiceWorkerProvider* createServiceWorkerProvider() override;
   void didAccessInitialDocument() override;
   blink::WebFrame* createChildFrame(
@@ -623,6 +629,10 @@ class CONTENT_EXPORT RenderFrameImpl
       blink::WebFrameSerializerClient::FrameSerializationStatus status)
       override;
 
+  // base::trace_event::TraceLog::EnabledStateObserver implementation:
+  void OnTraceLogEnabled() override;
+  void OnTraceLogDisabled() override;
+
   // Make this frame show an empty, unscriptable page.
   // TODO(nasko): Remove this method once swapped out state is no longer used.
   void NavigateToSwappedOutURL();
@@ -706,6 +716,8 @@ class CONTENT_EXPORT RenderFrameImpl
 
   bool IsLocalRoot() const;
 
+  void TraceSnapshot() const;
+
   // Builds and sends DidCommitProvisionalLoad to the host.
   void SendDidCommitProvisionalLoad(blink::WebFrame* frame,
                                     blink::WebHistoryCommitType commit_type,
@@ -1208,6 +1220,13 @@ class CONTENT_EXPORT RenderFrameImpl
   scoped_ptr<ExternalPopupMenu> external_popup_menu_;
 #endif
 
+  base::trace_event::TraceScopedTrackableObject<
+      base::trace_event::TraceID::WithScope>
+      trace_object_;
+
+  scoped_ptr<RenderFrameBlameContext> blame_context_;
+  scoped_ptr<WebBlameContextImpl> web_blame_context_;
+
   base::WeakPtrFactory<RenderFrameImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);