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 8aa008db3348c34b679157534b5b9a2d7f3ab8f7..068bfe844e9f4a087b764952ad2f8954eab51744 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"
@@ -430,6 +431,7 @@ class CONTENT_EXPORT RenderFrameImpl
       const blink::WebPopupMenuInfo& popup_menu_info,
       blink::WebExternalPopupMenuClient* popup_menu_client) override;
   blink::WebCookieJar* cookieJar() override;
+  blink::BlameContext* frameBlameContext() override;
   blink::WebServiceWorkerProvider* createServiceWorkerProvider() override;
   void didAccessInitialDocument() override;
   blink::WebFrame* createChildFrame(
@@ -1203,6 +1205,8 @@ class CONTENT_EXPORT RenderFrameImpl
   scoped_ptr<ExternalPopupMenu> external_popup_menu_;
 #endif
 
+  RenderFrameBlameContext* blame_context_;  // Not owned.
+
   base::WeakPtrFactory<RenderFrameImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);