[Suggestions] Make ThumbnailManager implement ImageManager

chrome/chrome_browser.gypi

 # Copyright 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.
 
 {
   'variables': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 1113 matching lines @@
       'browser/search/instant_service_observer.cc',
       'browser/search/instant_service_observer.h',
       'browser/search/local_ntp_source.cc',
       'browser/search/local_ntp_source.h',
       'browser/search/most_visited_iframe_source.cc',
       'browser/search/most_visited_iframe_source.h',
       'browser/search/search.cc',
       'browser/search/search.h',
       'browser/search/suggestions/blacklist_store.cc',
       'browser/search/suggestions/blacklist_store.h',
+      'browser/search/suggestions/image_manager.h',
       'browser/search/suggestions/suggestions_service.cc',
       'browser/search/suggestions/suggestions_service.h',
       'browser/search/suggestions/suggestions_service_factory.cc',
       'browser/search/suggestions/suggestions_service_factory.h',
       'browser/search/suggestions/suggestions_source.cc',
       'browser/search/suggestions/suggestions_source.h',
       'browser/search/suggestions/suggestions_store.cc',
       'browser/search/suggestions/suggestions_store.h',
       'browser/search/suggestions/thumbnail_manager.cc',
       'browser/search/suggestions/thumbnail_manager.h',
@@ skipping 2448 matching lines @@
             'package_name': 'org/chromium/chrome/browser',
             'template_deps': ['browser/android/tab_load_status.h'],
           },
           'includes': [ '../build/android/java_cpp_template.gypi' ],
         },
       ],
      },
     ],
   ],
 }