Browser Plugin: Add HTML5-like postMessage support

content/renderer/browser_plugin/browser_plugin_manager_impl.cc

Index: content/renderer/browser_plugin/browser_plugin_manager_impl.cc
diff --git a/content/renderer/browser_plugin/browser_plugin_manager_impl.cc b/content/renderer/browser_plugin/browser_plugin_manager_impl.cc
index d4027f3cc3c40e2962385a7275a2ccf5f6d11ab6..e5abacc1e9111daeae6835c556195ed1d5b79b13 100644
--- a/content/renderer/browser_plugin/browser_plugin_manager_impl.cc
+++ b/content/renderer/browser_plugin/browser_plugin_manager_impl.cc
@@ -39,6 +39,8 @@ bool BrowserPluginManagerImpl::OnControlMessageReceived(
     IPC_MESSAGE_HANDLER(BrowserPluginMsg_GuestCrashed, OnGuestCrashed)
     IPC_MESSAGE_HANDLER(BrowserPluginMsg_DidNavigate, OnDidNavigate)
     IPC_MESSAGE_HANDLER(BrowserPluginMsg_AdvanceFocus, OnAdvanceFocus)
+    IPC_MESSAGE_HANDLER(BrowserPluginMsg_GuestContentWindowReady,
+                        OnGuestContentWindowReady)
     IPC_MESSAGE_HANDLER(BrowserPluginMsg_ShouldAcceptTouchEvents,
                         OnShouldAcceptTouchEvents)
     IPC_MESSAGE_HANDLER(BrowserPluginMsg_LoadStart, OnLoadStart)
@@ -78,6 +80,13 @@ void BrowserPluginManagerImpl::OnAdvanceFocus(int instance_id, bool reverse) {
     plugin->AdvanceFocus(reverse);
 }
 
+void BrowserPluginManagerImpl::OnGuestContentWindowReady(int instance_id,
+                                                         int guest_routing_id) {
+  BrowserPlugin* plugin = GetBrowserPlugin(instance_id);
+  if (plugin)
+    plugin->GuestContentWindowReady(guest_routing_id);
+}
+
 void BrowserPluginManagerImpl::OnShouldAcceptTouchEvents(int instance_id,
                                                          bool accept) {
   BrowserPlugin* plugin = GetBrowserPlugin(instance_id);