Browser Plugin: Add HTML5-like postMessage support

content/renderer/browser_plugin/browser_plugin.h

Index: content/renderer/browser_plugin/browser_plugin.h
diff --git a/content/renderer/browser_plugin/browser_plugin.h b/content/renderer/browser_plugin/browser_plugin.h
index 45ae96d09a691c0183cc628fcfa455306bd19031..d9ea479006277e70f512807e7fb81894fa3636b7 100644
--- a/content/renderer/browser_plugin/browser_plugin.h
+++ b/content/renderer/browser_plugin/browser_plugin.h
@@ -36,6 +36,8 @@ class CONTENT_EXPORT BrowserPlugin :
   // Set the src attribute value of the BrowserPlugin instance and reset
   // the guest_crashed_ flag.
   void SetSrcAttribute(const std::string& src);
+  // Get the guest's DOMWindow proxy.
+  NPObject* GetContentWindow() const;
   // Returns Chrome's process ID for the current guest.
   int process_id() const { return process_id_; }
   // The partition identifier string is stored as UTF-8.
@@ -66,6 +68,10 @@ class CONTENT_EXPORT BrowserPlugin :
   // element.
   void AdvanceFocus(bool reverse);
 
+  // Inform the BrowserPlugin that the guest's contentWindow is ready,
+  // and provide it with a routing ID to grab it.
+  void GuestContentWindowReady(int guest_routing_id);
+
   // Informs the BrowserPlugin that the guest has started/stopped accepting
   // touch events.
   void SetAcceptTouchEvents(bool accept);
@@ -191,6 +197,7 @@ class CONTENT_EXPORT BrowserPlugin :
   int process_id_;
   std::string storage_partition_id_;
   bool persist_storage_;
+  int guest_routing_id_;

[Charlie Reis, 2012/10/12 00:31:43]

Maybe this should be content_window_routing_id_.

[Fady Samuel, 2012/10/12 18:07:53]

Done.

   // Tracks the visibility of the browser plugin regardless of the whole
   // embedder RenderView's visibility.
   bool visible_;