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 4c256b0ca598c436a06d35e4a43deec902cecf5c..838b3a09fb4f04e92092579340eb16dc9bc8c6d1 100644
--- a/content/renderer/browser_plugin/browser_plugin_manager_impl.cc
+++ b/content/renderer/browser_plugin/browser_plugin_manager_impl.cc
@@ -39,6 +39,7 @@ 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_ReceiveMessage, OnReceiveMessage)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
@@ -71,4 +72,13 @@ void BrowserPluginManagerImpl::OnAdvanceFocus(int instance_id, bool reverse) {
     plugin->AdvanceFocus(reverse);
 }
 
+void BrowserPluginManagerImpl::OnReceiveMessage(int instance_id,
+                                                int source_routing_id,
+                                                const string16& source_origin,
+                                                const string16& data) {
+  BrowserPlugin* plugin = GetBrowserPlugin(instance_id);
+  if (plugin)
+    plugin->ReceiveMessage(source_routing_id, source_origin, data);
+}
+
 }  // namespace content