Add support for distilling current WebContents

content/public/browser/web_contents.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_H_
 
 #include <set>
 
 #include "base/basictypes.h"
@@ skipping 241 matching lines @@
   // Returns the SiteInstance associated with the current page.
   virtual SiteInstance* GetSiteInstance() const = 0;
 
   // Returns the SiteInstance for the pending navigation, if any.  Otherwise
   // returns the current SiteInstance.
   virtual SiteInstance* GetPendingSiteInstance() const = 0;
 
   // Return whether this WebContents is loading a resource.
   virtual bool IsLoading() const = 0;
 
+  // Return whether the document has been loaded in the main frame.
+  virtual bool IsDocumentLoadedInMainFrame() const = 0;
+
   // Returns whether this WebContents is waiting for a first-response for the
   // main resource of the page.
   virtual bool IsWaitingForResponse() const = 0;
 
   // Return the current load state and the URL associated with it.
   virtual const net::LoadStateWithParam& GetLoadState() const = 0;
   virtual const base::string16& GetLoadStateHost() const = 0;
 
   // Return the upload progress.
   virtual uint64 GetUploadSize() const = 0;
@@ skipping 277 matching lines @@
 
  private:
   // This interface should only be implemented inside content.
   friend class WebContentsImpl;
   WebContents() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_H_