Change ImageStore to use SequenceChecker instead of ThreadChecker.

components/enhanced_bookmarks/image_store.h

 // Copyright 2014 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 COMPONENTS_ENHANCED_BOOKMARKS_IMAGE_STORE_H_
 #define COMPONENTS_ENHANCED_BOOKMARKS_IMAGE_STORE_H_
 
 #include <map>
 #include <set>
 
-#include "base/threading/thread_checker.h"
+#include "base/sequence_checker.h"
 #include "ui/gfx/image/image.h"
 
 class GURL;
 
 // The ImageStore keeps an image for each URL.  This class is not thread safe,
 // and will check the thread using base::ThreadChecker, except the constructor.
 class ImageStore {
  public:
   ImageStore();
   virtual ~ImageStore();
@@ skipping 24 matching lines @@
   // Populates |urls| with all the urls that have an image in the store.
   virtual void GetAllPageUrls(std::set<GURL>* urls) = 0;
 
   // Removes all images.
   virtual void ClearAll() = 0;
 
   // Moves an image from one url to another.
   void ChangeImageURL(const GURL& from, const GURL& to);
 
  protected:
-  base::ThreadChecker thread_checker_;
+  base::SequenceChecker sequence_checker_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ImageStore);
 };
 
 #endif  // COMPONENTS_ENHANCED_BOOKMARKS_IMAGE_STORE_H_