Browser Plugin: Add HTML5-like postMessage support

content/browser/browser_plugin/browser_plugin_embedder_helper.h

Index: content/browser/browser_plugin/browser_plugin_embedder_helper.h
diff --git a/content/browser/browser_plugin/browser_plugin_embedder_helper.h b/content/browser/browser_plugin/browser_plugin_embedder_helper.h
index c5e6c8ea329ec31411330e8562add89b5edb06d5..4fe7f5edf608deec0be9f6af2b7ee6a597ca886a 100644
--- a/content/browser/browser_plugin/browser_plugin_embedder_helper.h
+++ b/content/browser/browser_plugin/browser_plugin_embedder_helper.h
@@ -8,6 +8,7 @@
 #include <string>
 
 #include "base/compiler_specific.h"
+#include "base/string16.h"
 #include "content/public/browser/render_view_host_observer.h"
 
 namespace IPC {
@@ -20,6 +21,7 @@ class Size;
 }
 
 struct BrowserPluginHostMsg_ResizeGuest_Params;
+struct ViewMsg_PostMessage_Params;
 
 namespace content {
 
@@ -60,6 +62,7 @@ class BrowserPluginEmbedderHelper : public RenderViewHostObserver {
   void OnHandleInputEvent(const IPC::SyncMessage& message, bool* handled);
   void OnSetFocus(int instance_id, bool focused);
   void OnPluginDestroyed(int instance_id);
+  void OnRouteMessageEvent(const ViewMsg_PostMessage_Params& params);
   void OnGo(int instance_id, int relative_index);
   void OnStop(int instance_id);
   void OnReload(int instance_id);