Move TopSites api from c/b/history to c/b/e/api

chrome/chrome_browser_extensions.gypi

 # Copyright (c) 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.
 
 {
   'targets': [
     {
       'target_name': 'browser_extensions',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 364 matching lines @@
         'browser/extensions/api/tabs/tabs_constants.cc',
         'browser/extensions/api/tabs/tabs_constants.h',
         'browser/extensions/api/tabs/windows_event_router.cc',
         'browser/extensions/api/tabs/windows_event_router.h',
         'browser/extensions/api/terminal/terminal_extension_helper.cc',
         'browser/extensions/api/terminal/terminal_extension_helper.h',
         'browser/extensions/api/terminal/terminal_private_api.cc',
         'browser/extensions/api/terminal/terminal_private_api.h',
         'browser/extensions/api/test/test_api.cc',
         'browser/extensions/api/test/test_api.h',
+        'browser/extensions/api/top_sites/top_sites_api.cc',
+        'browser/extensions/api/top_sites/top_sites_api.h',
         'browser/extensions/api/usb/usb_api.cc',
         'browser/extensions/api/usb/usb_api.h',
         'browser/extensions/api/usb/usb_device_resource.cc',
         'browser/extensions/api/usb/usb_device_resource.h',
         'browser/extensions/api/web_navigation/frame_navigation_state.cc',
         'browser/extensions/api/web_navigation/frame_navigation_state.h',
         'browser/extensions/api/web_navigation/web_navigation_api.cc',
         'browser/extensions/api/web_navigation/web_navigation_api.h',
         'browser/extensions/api/web_navigation/web_navigation_api_constants.cc',
         'browser/extensions/api/web_navigation/web_navigation_api_constants.h',
@@ skipping 558 matching lines @@
           'msvs_settings': {
             'VCLinkerTool': {
               'SubSystem': '2',  # Set /SUBSYSTEM:WINDOWS
             },
           },
         },
       ],
     }, ],  # 'OS=="win"'
   ],  # 'conditions'
 }