Ensure the NavigationHandle's nav entry ID is updated during transfers.

content/browser/frame_host/navigation_controller_impl.h

 // Copyright 2013 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_FRAME_HOST_NAVIGATION_CONTROLLER_IMPL_H_
 #define CONTENT_BROWSER_FRAME_HOST_NAVIGATION_CONTROLLER_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 240 matching lines @@
   // whether any frame successfully started a navigation.
   bool NavigateToPendingEntryInternal(ReloadType reload_type);
 
   // Recursively identifies which frames need to be navigated for the pending
   // NavigationEntry, starting at |frame| and exploring its children.  Only used
   // in --site-per-process.
   void FindFramesToNavigate(FrameTreeNode* frame,
                             FrameLoadVector* sameDocumentLoads,
                             FrameLoadVector* differentDocumentLoads);
 
+  // Returns whether there is a pending NavigationEntry whose unique ID matches
+  // the given NavigationHandle's pending_nav_entry_id.
+  bool PendingEntryMatchesHandle(NavigationHandleImpl* handle) const;
+
   // Classifies the given renderer navigation (see the NavigationType enum).
   NavigationType ClassifyNavigation(
       RenderFrameHostImpl* rfh,
       const FrameHostMsg_DidCommitProvisionalLoad_Params& params) const;
 
   // Handlers for the different types of navigation types. They will actually
   // handle the navigations corresponding to the different NavClasses above.
   // They will NOT broadcast the commit notification, that should be handled by
   // the caller.
   //
@@ skipping 175 matching lines @@
   TimeSmoother time_smoother_;
 
   scoped_ptr<NavigationEntryScreenshotManager> screenshot_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(NavigationControllerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATION_CONTROLLER_IMPL_H_