Refactor postMessage for out-of-process iframes.

content/browser/web_contents/web_contents_impl.h

Index: content/browser/web_contents/web_contents_impl.h
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index 6753535c26ea04acf21c1b24af7520a6bd401284..671ce6c9ef067a706763fd5003b1248da7fc3d89 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -43,7 +43,6 @@
 
 struct BrowserPluginHostMsg_ResizeGuest_Params;
 struct ViewHostMsg_DateTimeDialogValue_Params;
-struct ViewMsg_PostMessage_Params;
 
 namespace content {
 class BrowserPluginEmbedder;
@@ -412,6 +411,11 @@ class CONTENT_EXPORT WebContentsImpl
   GeolocationServiceContext* GetGeolocationServiceContext() override;
   void EnterFullscreenMode(const GURL& origin) override;
   void ExitFullscreenMode() override;
+  bool ShouldRouteMessageEvent(
+      RenderFrameHost* target_rfh,
+      SiteInstance* source_site_instance) const override;
+  int EnsureOpenerRenderViewsExist(
+      RenderFrameHost* render_frame_host) override;
 #if defined(OS_WIN)
   gfx::NativeViewAccessible GetParentNativeViewAccessible() override;
 #endif
@@ -440,8 +444,6 @@ class CONTENT_EXPORT WebContentsImpl
   void DidCancelLoading() override;
   void DocumentAvailableInMainFrame(RenderViewHost* render_view_host) override;
   void RouteCloseEvent(RenderViewHost* rvh) override;
-  void RouteMessageEvent(RenderViewHost* rvh,
-                         const ViewMsg_PostMessage_Params& params) override;
   bool AddMessageToConsole(int32 level,
                            const base::string16& message,
                            int32 line_no,