Browser Plugin: Add HTML5-like postMessage support

content/browser/browser_plugin/browser_plugin_guest.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 BrowserPluginGuest represents the browser side of browser <--> renderer
 // communication. A BrowserPlugin (a WebPlugin) is on the renderer side of
 // browser <--> guest renderer communication. The 'guest' renderer is a
 // <browser> tag.
 //
 // BrowserPluginGuest lives on the UI thread of the browser process. It has a
@@ skipping 34 matching lines @@
 #include "ui/surface/transport_dib.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/size.h"
 #include "webkit/glue/webcursor.h"
 
 namespace gfx {
 class Size;
 }
 
 struct BrowserPluginHostMsg_ResizeGuest_Params;
+struct ViewMsg_PostMessage_Params;
 struct ViewHostMsg_UpdateRect_Params;
 
 namespace content {
 
 class BrowserPluginHostFactory;
 class BrowserPluginEmbedder;
 class RenderProcessHost;
 
 // A browser plugin guest provides functionality for WebContents to operate in
 // the guest role and implements guest specific overrides for ViewHostMsg_*
@@ skipping 24 matching lines @@
       int64 frame_id,
       bool is_main_frame,
       const GURL& url,
       PageTransition transition_type,
       RenderViewHost* render_view_host) OVERRIDE;
   virtual void RenderViewGone(base::TerminationStatus status) OVERRIDE;
 
   // WebContentsDelegate implementation.
   virtual void RendererUnresponsive(WebContents* source) OVERRIDE;
 
+  // Returns the identifier that uniquely identifies a browser plugin guest
+  // within an embedder.
+  int instance_id() const { return instance_id_; }
+
  private:
   friend class BrowserPluginEmbedder;
   friend class BrowserPluginGuestHelper;
   friend class TestBrowserPluginGuest;
 
   BrowserPluginGuest(int instance_id,
                      WebContentsImpl* web_contents,
                      RenderViewHost* render_view_host);
 
   void set_embedder_render_process_host(
       RenderProcessHost* render_process_host) {
     embedder_render_process_host_ = render_process_host;
   }
   RenderProcessHost* embedder_render_process_host() {
     return embedder_render_process_host_;
   }
-  // Returns the identifier that uniquely identifies a browser plugin guest
-  // within an embedder.
-  int instance_id() const { return instance_id_; }
 
   void SetDamageBuffer(TransportDIB* damage_buffer,
 #if defined(OS_WIN)
                        int damage_buffer_size,
 #endif
                        const gfx::Size& damage_view_size,
                        float scale_factor);
   TransportDIB* damage_buffer() const { return damage_buffer_.get(); }
   const gfx::Size& damage_view_size() const { return damage_view_size_; }
   float damage_buffer_scale_factor() const {
     return damage_buffer_scale_factor_;
   }
+  void set_swapped_out_embedder_routing_id(int routing_id) {
+    swapped_out_embedder_routing_id_ = routing_id;
+  }
+  int swapped_out_embedder_routing_id() const {
+    return swapped_out_embedder_routing_id_;
+  }
+  void set_swapped_out_guest_routing_id(int routing_id) {
+    swapped_out_guest_routing_id_ = routing_id;
+  }
+  int swapped_out_guest_routing_id() const {
+    return swapped_out_guest_routing_id_;
+  }
 
   void UpdateRect(RenderViewHost* render_view_host,
                   const ViewHostMsg_UpdateRect_Params& params);
   void UpdateRectACK(int message_id, const gfx::Size& size);
   // Handles input event routed through the embedder (which is initiated in the
   // browser plugin (renderer side of the embedder)).
   void HandleInputEvent(RenderViewHost* render_view_host,
                         const gfx::Rect& guest_rect,
                         const WebKit::WebInputEvent& event,
                         IPC::Message* reply_message);
   // Overrides default ShowWidget message so we show them on the correct
   // coordinates.
   void ShowWidget(RenderViewHost* render_view_host,
                   int route_id,
                   const gfx::Rect& initial_pos);
   // Overriden in tests.
   virtual void SetFocus(bool focused);
   void SetCursor(const WebCursor& cursor);
   // Handles input event acks so they are sent to browser plugin host (via
   // embedder) instead of default view/widget host.
   void HandleInputEventAck(RenderViewHost* render_view_host, bool handled);
 
+  // Handles postMessages sent from the guest to the embedder.
+  void RouteMessageEvent(const ViewMsg_PostMessage_Params& params);
+
   // Helper to send messages to embedder. Overriden in test implementation since
   // we want to intercept certain messages for testing.
   virtual void SendMessageToEmbedder(IPC::Message*);
 
   // Static factory instance (always NULL for non-test).
   static content::BrowserPluginHostFactory* factory_;
 
   // Overriden in tests.
   virtual bool ViewTakeFocus(bool reverse);
 
   RenderProcessHost* embedder_render_process_host_;
   // An identifier that uniquely identifies a browser plugin guest within an
   // embedder.
   int instance_id_;
   scoped_ptr<TransportDIB> damage_buffer_;
 #if defined(OS_WIN)
   size_t damage_buffer_size_;
 #endif
   gfx::Size damage_view_size_;
   float damage_buffer_scale_factor_;
   scoped_ptr<IPC::Message> pending_input_event_reply_;
   gfx::Rect guest_rect_;
   WebCursor cursor_;
   IDMap<RenderViewHost> pending_updates_;
   int pending_update_counter_;
   base::TimeDelta guest_hang_timeout_;
+  int swapped_out_embedder_routing_id_;
+  int swapped_out_guest_routing_id_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginGuest);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_GUEST_H_