Revert of OOPIF: Specify previous sibling frames when creating new RenderFrames.

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 <map>
 #include <set>
 #include <string>
@@ skipping 559 matching lines @@
 
   // RenderFrameHostManager::Delegate ------------------------------------------
 
   bool CreateRenderViewForRenderManager(
       RenderViewHost* render_view_host,
       int opener_route_id,
       int proxy_routing_id,
       bool for_main_frame_navigation) override;
   bool CreateRenderFrameForRenderManager(RenderFrameHost* render_frame_host,
                                          int parent_routing_id,
-                                         int previous_sibling_routing_id,
                                          int proxy_routing_id) override;
   void BeforeUnloadFiredFromRenderManager(
       bool proceed,
       const base::TimeTicks& proceed_time,
       bool* proceed_to_fire_unload) override;
   void RenderProcessGoneFromRenderManager(
       RenderViewHost* render_view_host) override;
   void UpdateRenderViewSizeForRenderManager() override;
   void CancelModalDialogsForRenderManager() override;
   void NotifySwappedFromRenderManager(RenderFrameHost* old_host,
@@ skipping 694 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_