Fix remaining WeakPtrFactory ordering problems

components/suggestions/image_manager.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_SUGGESTIONS_IMAGE_MANAGER_H_
 #define COMPONENTS_SUGGESTIONS_IMAGE_MANAGER_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 118 matching lines @@
 
   // Holding the bitmaps in memory, keyed by website URL string.
   ImageMap image_map_;
 
   scoped_ptr<ImageFetcher> image_fetcher_;
 
   scoped_ptr<leveldb_proto::ProtoDatabase<ImageData> > database_;
 
   bool database_ready_;
 
+  base::ThreadChecker thread_checker_;
+
   base::WeakPtrFactory<ImageManager> weak_ptr_factory_;
 
-  base::ThreadChecker thread_checker_;
-
   DISALLOW_COPY_AND_ASSIGN(ImageManager);
 };
 
 }  // namespace suggestions
 
 #endif  // COMPONENTS_SUGGESTIONS_IMAGE_MANAGER_H_