OOPIF: Set timer for per-frame UpdateState.

content/renderer/render_view_impl.h

Index: content/renderer/render_view_impl.h
diff --git a/content/renderer/render_view_impl.h b/content/renderer/render_view_impl.h
index c2527cdc353e42496a8d4378990ee9a934b52c2b..72fd49d2bc6e5ba4cf2f3e4a466f46b93b90243f 100644
--- a/content/renderer/render_view_impl.h
+++ b/content/renderer/render_view_impl.h
@@ -291,6 +291,11 @@ class CONTENT_EXPORT RenderViewImpl
   void TransferActiveWheelFlingAnimation(
       const blink::WebActiveWheelFlingParameters& params);
 
+  // Starts a timer to send an UpdateState message on behalf of |frame|, if the
+  // timer isn't already running. This allows multiple state changing events to
+  // be coalesced into one update.
+  void StartNavStateSyncTimerIfNecessary(RenderFrameImpl* frame);
+
   // Synchronously sends the current navigation state to the browser.
   void SendUpdateState();
 
@@ -574,8 +579,6 @@ class CONTENT_EXPORT RenderViewImpl
   // are to be moved to RenderFrameImpl <http://crbug.com/361761>.
 
   void didChangeIcon(blink::WebLocalFrame*, blink::WebIconURL::Type);
-  void didUpdateCurrentHistoryItem(blink::WebLocalFrame* frame);
-  void didChangeScrollOffset(blink::WebLocalFrame* frame);
 
   static Referrer GetReferrerFromRequest(
       blink::WebFrame* frame,
@@ -714,15 +717,16 @@ class CONTENT_EXPORT RenderViewImpl
                      const blink::WebRect& selection_rect,
                      bool final_status_update);
 
-  // Starts nav_state_sync_timer_ if it isn't already running.
-  void StartNavStateSyncTimerIfNecessary();
-
 #if defined(OS_WIN) || (defined(OS_POSIX) && !defined(OS_MACOSX))
   void UpdateFontRenderingFromRendererPrefs();
 #else
   void UpdateFontRenderingFromRendererPrefs() {}
 #endif
 
+  // In OOPIF-enabled modes, this tells each RenderFrame with a pending state
+  // update to inform the browser process.
+  void SendFrameStateUpdates();
+
   // Update the target url and tell the browser that the target URL has changed.
   // If |url| is empty, show |fallback_url|.
   void UpdateTargetURL(const GURL& url, const GURL& fallback_url);
@@ -825,6 +829,10 @@ class CONTENT_EXPORT RenderViewImpl
   // StartNavStateSyncTimerIfNecessary).
   base::OneShotTimer nav_state_sync_timer_;
 
+  // Set of RenderFrame routing IDs for frames that having pending UpdateState
+  // messages to send when the next |nav_state_sync_timer_| fires.
+  std::set<int> frames_with_pending_state_;
+
   // Page IDs ------------------------------------------------------------------
   // See documentation in RenderView.
   int32 page_id_;