Browser Plugin: Add HTML5-like postMessage support

content/browser/web_contents/web_contents_impl.h

Index: content/browser/web_contents/web_contents_impl.h
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index 635a406aca057391f28c4fca16c8ee4657b93217..2256d7ee017d4545fef5c6af5d649d9e9ab86b36 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -103,6 +103,10 @@ class CONTENT_EXPORT WebContentsImpl
   static webkit_glue::WebPreferences GetWebkitPrefs(
       content::RenderViewHost* rvh, const GURL& url);
 
+  // Creates a swapped out RenderView in the guest render process
+  // to allow the guest to postMessage back to its embedder.

[Charlie Reis, 2012/10/04 21:58:25]

Can you move this near CreateOpenerRenderViews?  It's very similar, but doesn't
create the opener chain.

Also, I don't think we want to restrict the comment to being about guests.  Just
use guests as an example.

[Fady Samuel, 2012/10/10 21:36:07]

I've updated the comment. However, this needs to be public to be used by
BrowserPluginEmbedder. The other method, CreateOpenerRenderViews is private.

+  int CreateSwappedOutRenderView(content::SiteInstance* instance);
+
   // Complex initialization here. Specifically needed to avoid having
   // members call back into our virtual functions in the constructor.
   virtual void Init(content::BrowserContext* browser_context,