Propagate window coordinates to out-of-process iframes renderers.

content/browser/frame_host/render_frame_host_manager.h

Index: content/browser/frame_host/render_frame_host_manager.h
diff --git a/content/browser/frame_host/render_frame_host_manager.h b/content/browser/frame_host/render_frame_host_manager.h
index 1b4afcbc87d7c9067142b47e4597419d1b0777ea..5eba090cdb6ca43a11be38010b238f700de1281f 100644
--- a/content/browser/frame_host/render_frame_host_manager.h
+++ b/content/browser/frame_host/render_frame_host_manager.h
@@ -487,6 +487,10 @@ class CONTENT_EXPORT RenderFrameHostManager
   // Returns the number of RenderFrameProxyHosts for this frame.
   int GetProxyCount();
 
+  // Sends an IPC message to every process in the FrameTree. This should only be
+  // called in the top-level RenderFrameHostManager.
+  void SendPageMessage(IPC::Message* msg);
+
   // Returns a const reference to the map of proxy hosts. The keys are
   // SiteInstance IDs, the values are RenderFrameProxyHosts.
   const std::unordered_map<int32_t, scoped_ptr<RenderFrameProxyHost>>&