Browser Plugin: Add HTML5-like postMessage support

content/browser/browser_plugin/browser_plugin_embedder.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // A BrowserPluginEmbedder has a list of guest it manages.
 // In the beginning when a renderer sees one or more guests (BrowserPlugin
 // instance(s)) and there is a request to navigate to them, the WebContents for
 // that renderer creates a BrowserPluginEmbedder for itself. The
 // BrowserPluginEmbedder, in turn, manages a set of BrowserPluginGuests -- one
 // BrowserPluginGuest for each guest in the embedding WebContents.
@@ skipping 22 matching lines @@
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
 #include "ui/surface/transport_dib.h"
 #include "webkit/glue/webcursor.h"
 
 namespace gfx {
 class Size;
 }
 
 class WebContentsImpl;
 
+struct BrowserPluginHostMsg_PostMessage_Params;
 struct BrowserPluginHostMsg_ResizeGuest_Params;
 struct ViewHostMsg_UpdateRect_Params;
 
 namespace content {
 
 class BrowserPluginGuest;
 class BrowserPluginHostFactory;
 
 // A browser plugin embedder provides functionality for WebContents to operate
 // in the 'embedder' role. It manages list of guests inside the embedder.
@@ skipping 75 matching lines @@
                    bool resize_pending,
                    float scale_factor);
   // Handles input events sent from the BrowserPlugin (embedder's renderer
   // process) by passing them to appropriate guest's input handler.
   void HandleInputEvent(int instance_id,
                         RenderViewHost* render_view_host,
                         const gfx::Rect& guest_rect,
                         const WebKit::WebInputEvent& event,
                         IPC::Message* reply_message);
   void PluginDestroyed(int instance_id);
+  // Called when the embedder posts a message to the guest.
+  void RouteMessageEvent(int instance_id,
+                         const string16& data,
+                         const string16& target_origin);
 
   // Called when visiblity of web_contents changes, so the embedder will
   // show/hide its guest.
   void WebContentsVisibilityChanged(bool visible);
 
   // Static factory instance (always NULL for non-test).
   static BrowserPluginHostFactory* factory_;
 
   // A scoped container for notification registries.
   NotificationRegistrar registrar_;
 
   // Contains guests' WebContents, mapping to their frame ids.
   GuestWebContentsMap guest_web_contents_container_;
   // Contains guests' WebContents, mapping from their instance ids.
   ContainerInstanceMap guest_web_contents_by_instance_id_;
   RenderViewHost* render_view_host_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginEmbedder);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_EMBEDDER_H_