Browser Plugin: Add HTML5-like postMessage support

content/browser/browser_plugin/browser_plugin_guest.h

Index: content/browser/browser_plugin/browser_plugin_guest.h
diff --git a/content/browser/browser_plugin/browser_plugin_guest.h b/content/browser/browser_plugin/browser_plugin_guest.h
index cf82b9f1493bc7c4a109bddaf8b5cd0855b69482..c4c74218149d40c70ffe6a1d98be756654deffa5 100644
--- a/content/browser/browser_plugin/browser_plugin_guest.h
+++ b/content/browser/browser_plugin/browser_plugin_guest.h
@@ -52,6 +52,7 @@ class Size;
 }
 
 struct BrowserPluginHostMsg_ResizeGuest_Params;
+struct ViewMsg_PostMessage_Params;
 struct ViewHostMsg_UpdateRect_Params;
 
 namespace content {
@@ -96,6 +97,10 @@ class CONTENT_EXPORT BrowserPluginGuest : public WebContentsDelegate,
   // 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;
@@ -112,9 +117,6 @@ class CONTENT_EXPORT BrowserPluginGuest : public WebContentsDelegate,
   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)
@@ -127,6 +129,18 @@ class CONTENT_EXPORT BrowserPluginGuest : public WebContentsDelegate,
   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);
@@ -149,6 +163,9 @@ class CONTENT_EXPORT BrowserPluginGuest : public WebContentsDelegate,
   // 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*);
@@ -175,6 +192,8 @@ class CONTENT_EXPORT BrowserPluginGuest : public WebContentsDelegate,
   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);
 };