Refactor postMessage for out-of-process iframes.

content/browser/renderer_host/render_view_host_delegate.h

Index: content/browser/renderer_host/render_view_host_delegate.h
diff --git a/content/browser/renderer_host/render_view_host_delegate.h b/content/browser/renderer_host/render_view_host_delegate.h
index cee439cf10c393a88ff6419ddc80593c5ad5be9b..2697e5e790699efa4e1ca6218414c0cb8160eb60 100644
--- a/content/browser/renderer_host/render_view_host_delegate.h
+++ b/content/browser/renderer_host/render_view_host_delegate.h
@@ -21,7 +21,6 @@ class GURL;
 class SkBitmap;
 struct ViewHostMsg_CreateWindow_Params;
 struct FrameHostMsg_DidCommitProvisionalLoad_Params;
-struct ViewMsg_PostMessage_Params;
 
 namespace base {
 class ListValue;
@@ -129,11 +128,6 @@ class CONTENT_EXPORT RenderViewHostDelegate {
   // The page wants to close the active view in this tab.
   virtual void RouteCloseEvent(RenderViewHost* rvh) {}
 
-  // The page wants to post a message to the active view in this tab.
-  virtual void RouteMessageEvent(
-      RenderViewHost* rvh,
-      const ViewMsg_PostMessage_Params& params) {}
-
   // Return a dummy RendererPreferences object that will be used by the renderer
   // associated with the owning RenderViewHost.
   virtual RendererPreferences GetRendererPrefs(