Make sure FrameScheduler is cleared when LocalFrame::detach() finishes

content/renderer/render_frame_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_RENDERER_RENDER_FRAME_IMPL_H_
 #define CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 1239 matching lines @@
   // callback, and the remaining elements are the other file chooser completion
   // still waiting to be run (in order).
   struct PendingFileChooser;
   std::deque<std::unique_ptr<PendingFileChooser>> file_chooser_completions_;
 
 #if defined(USE_EXTERNAL_POPUP_MENU)
   // The external popup for the currently showing select popup.
   std::unique_ptr<ExternalPopupMenu> external_popup_menu_;
 #endif
 
-  FrameBlameContext* blame_context_;  // Not owned.
+  std::unique_ptr<FrameBlameContext> blame_context_;
 
   // Plugins -------------------------------------------------------------------
 #if defined(ENABLE_PLUGINS)
   typedef std::set<PepperPluginInstanceImpl*> PepperPluginSet;
   PepperPluginSet active_pepper_instances_;
 
   // Whether or not the focus is on a PPAPI plugin
   PepperPluginInstanceImpl* focused_pepper_plugin_;
 
   // The plugin instance that received the last mouse event. It is set to NULL
   // if the last mouse event went to elements other than Pepper plugins.
   // |pepper_last_mouse_event_target_| is not owned by this class. We depend on
   // the RenderFrameImpl to NULL it out when it destructs.
   PepperPluginInstanceImpl* pepper_last_mouse_event_target_;
 #endif
 
   base::WeakPtrFactory<RenderFrameImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_IMPL_H_