Store the callstack of the IPC sender of ViewMsg_New

content/renderer/render_view_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_RENDERER_RENDER_VIEW_IMPL_H_
 #define CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
 
 #include <deque>
 #include <map>
 #include <set>
@@ skipping 185 matching lines @@
   }
 
   MouseLockDispatcher* mouse_lock_dispatcher() {
     return mouse_lock_dispatcher_;
   }
 
   HistoryController* history_controller() {
     return history_controller_.get();
   }
 
+  const std::vector<unsigned long>& debug_info() { return debug_info_; }
+
   // Functions to add and remove observers for this object.
   void AddObserver(RenderViewObserver* observer);
   void RemoveObserver(RenderViewObserver* observer);
 
   // Returns the StatsCollectionObserver associated with this view, or NULL
   // if one wasn't created;
   StatsCollectionObserver* GetStatsCollectionObserver() {
     return stats_collection_observer_.get();
   }
 
@@ skipping 818 matching lines @@
 
   // NOTE: stats_collection_observer_ should be the last members because their
   // constructors call the AddObservers method of RenderViewImpl.
   scoped_ptr<StatsCollectionObserver> stats_collection_observer_;
 
   typedef std::map<cc::SharedBitmapId, cc::SharedBitmap*> BitmapMap;
   BitmapMap disambiguation_bitmaps_;
 
   bool page_scale_factor_is_one_;
 
+  // Temporary debug information to help track http://crbug.com/464633.
+  std::vector<unsigned long> debug_info_;
+
   // ---------------------------------------------------------------------------
   // ADDING NEW DATA? Please see if it fits appropriately in one of the above
   // sections rather than throwing it randomly at the end. If you're adding a
   // bunch of stuff, you should probably create a helper class and put your
   // data and methods on that to avoid bloating RenderView more.  You can
   // use the Observer interface to filter IPC messages and receive frame change
   // notifications.
   // ---------------------------------------------------------------------------
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_VIEW_IMPL_H_