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 bfef213c7c8b1eb69706a526174cb929ac459d5d..fe0363832656ce07395a891ba232b890a9657dc8 100644
--- a/content/browser/browser_plugin/browser_plugin_guest.h
+++ b/content/browser/browser_plugin/browser_plugin_guest.h
@@ -41,6 +41,7 @@
 
 class TransportDIB;
 struct ViewHostMsg_UpdateRect_Params;
+struct ViewMsg_PostMessage_Params;
 
 namespace WebKit {
 class WebInputEvent;
@@ -81,6 +82,23 @@ class CONTENT_EXPORT BrowserPluginGuest : public WebContentsDelegate,
     embedder_render_process_host_ = render_process_host;
   }
 
+  // Returns the identifier that uniquely identifies a browser plugin guest
+  // within an embedder.
+  int instance_id() const { return instance_id_; }
+
+  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_;
+  }
+
   // WebContentsObserver implementation.
   virtual void DidCommitProvisionalLoadForFrame(
       int64 frame_id,
@@ -111,6 +129,8 @@ class CONTENT_EXPORT BrowserPluginGuest : public WebContentsDelegate,
   // 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);
 
   // The guest needs to notify the plugin in the embedder to start (or stop)
   // accepting touch events.
@@ -148,9 +168,6 @@ 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_; }
   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 {
@@ -180,6 +197,8 @@ 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);
 };