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 8d7de499b78d850fb0173b993339e0a6ea3ec36e..c3058370d35f27ebbade7dd524730da0a1460ae6 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -100,6 +100,10 @@ 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.
+  int CreateSwappedOutRenderViewForGuest(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,