Browser Plugin: Add HTML5-like postMessage support

content/renderer/browser_plugin/browser_plugin_manager_impl.h

Index: content/renderer/browser_plugin/browser_plugin_manager_impl.h
diff --git a/content/renderer/browser_plugin/browser_plugin_manager_impl.h b/content/renderer/browser_plugin/browser_plugin_manager_impl.h
index 7f3c8c9088912ce04a3ce42a999bb87520da4995..ee179aa7a0d605e54cc4db2053dcd8368807c2e9 100644
--- a/content/renderer/browser_plugin/browser_plugin_manager_impl.h
+++ b/content/renderer/browser_plugin/browser_plugin_manager_impl.h
@@ -35,6 +35,10 @@ class BrowserPluginManagerImpl : public BrowserPluginManager {
   void OnGuestCrashed(int instance_id);
   void OnDidNavigate(int instance_id, const GURL& url);
   void OnAdvanceFocus(int instance_id, bool reverse);
+  void OnReceiveMessage(int instance_id,
+                        int source_routing_id,
+                        const string16& source_origin,
+                        const string16& data);
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginManagerImpl);
 };