Add experimental code behind a flag for Content Size Policy

content/browser/web_contents/web_contents_impl.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_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 
 #include <stdint.h>
 
 #include <functional>
@@ skipping 733 matching lines @@
 
   // Called by MediaWebContentsObserver when playback starts or stops.  See the
   // WebContentsObserver function stubs for more details.
   void MediaStartedPlaying(const WebContentsObserver::MediaPlayerId& id);
   void MediaStoppedPlaying(const WebContentsObserver::MediaPlayerId& id);
 
   MediaWebContentsObserver* media_web_contents_observer() {
     return media_web_contents_observer_.get();
   }
 
+  LoaderIOThreadNotifier* loader_io_thread_notifier() {
+    return loader_io_thread_notifier_.get();
+  }
+
   // Update the web contents visibility.
   void UpdateWebContentsVisibility(bool visible);
 
   // Called by FindRequestManager when find replies come in from a renderer
   // process.
   void NotifyFindReply(int request_id,
                        int number_of_matches,
                        const gfx::Rect& selection_rect,
                        int active_match_ordinal,
                        bool final_update);
@@ skipping 669 matching lines @@
   // Adds/removes a callback called on creation of each new WebContents.
   static void AddCreatedCallbackForTesting(const CreatedCallback& callback);
   static void RemoveCreatedCallbackForTesting(const CreatedCallback& callback);
 
   DISALLOW_COPY_AND_ASSIGN(FriendZone);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_