[Suggestions] Rename ThumbnailManager to ImageManagerImpl

chrome/browser/search/suggestions/suggestions_source.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 CHROME_BROWSER_SEARCH_SUGGESTIONS_SUGGESTIONS_SOURCE_H_
 #define CHROME_BROWSER_SEARCH_SUGGESTIONS_SUGGESTIONS_SOURCE_H_
 
 #include <map>
 #include <string>
 
@@ skipping 40 matching lines @@
     const suggestions::SuggestionsProfile suggestions_profile;
     const content::URLDataSource::GotDataCallback callback;
     std::map<GURL, std::string> base64_encoded_pngs;
   };
 
   // Callback for suggestions from SuggestionsService.
   void OnSuggestionsAvailable(
       const content::URLDataSource::GotDataCallback& callback,
       const SuggestionsProfile& suggestions_profile);
 
-  // Callback for responses from each ThumbnailManager request.
+  // Callback for responses from each Thumbnail request.
   void OnThumbnailAvailable(RequestContext* context, base::Closure barrier,
                             const GURL& url, const SkBitmap* bitmap);
 
   // Callback for when all requests are complete. Renders the output webpage and
   // passes the result to the original caller.
   void OnThumbnailsFetched(RequestContext* context);
 
   // Only used when servicing requests on the UI thread.
   Profile* const profile_;
 
   // For callbacks may be run after destruction.
   base::WeakPtrFactory<SuggestionsSource> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SuggestionsSource);
 };
 
 }  // namespace suggestions
 
 #endif  // CHROME_BROWSER_SEARCH_SUGGESTIONS_SUGGESTIONS_SOURCE_H_