Browser Plugin: Add HTML5-like postMessage support

content/browser/browser_plugin/browser_plugin_guest_helper.h

Index: content/browser/browser_plugin/browser_plugin_guest_helper.h
diff --git a/content/browser/browser_plugin/browser_plugin_guest_helper.h b/content/browser/browser_plugin/browser_plugin_guest_helper.h
index 11a27cff432e75aef726c26be49e833ad521bb5d..38e983200422b7621a62161cef32708196baaa19 100644
--- a/content/browser/browser_plugin/browser_plugin_guest_helper.h
+++ b/content/browser/browser_plugin/browser_plugin_guest_helper.h
@@ -24,6 +24,7 @@ class Size;
 }
 
 struct BrowserPluginHostMsg_ResizeGuest_Params;
+struct ViewMsg_PostMessage_Params;
 struct ViewHostMsg_UpdateRect_Params;
 
 namespace content {
@@ -58,6 +59,7 @@ class BrowserPluginGuestHelper : public RenderViewHostObserver {
   void OnTakeFocus(bool reverse);
   void OnShowWidget(int route_id, const gfx::Rect& initial_pos);
   void OnSetCursor(const WebCursor& cursor);
+  void OnRouteMessageEvent(const ViewMsg_PostMessage_Params& params);
 
   BrowserPluginGuest* guest_;
   // A scoped container for notification registries.