Add chrome.webstore API methods to allow sites to see progress of installation

chrome/chrome_browser_extensions.gypi

 # Copyright (c) 2013 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 576 matching lines @@
         'browser/extensions/api/web_request/web_request_permissions.cc',
         'browser/extensions/api/web_request/web_request_permissions.h',
         'browser/extensions/api/web_request/web_request_time_tracker.cc',
         'browser/extensions/api/web_request/web_request_time_tracker.h',
         'browser/extensions/api/webrtc_audio_private/webrtc_audio_private_api.cc',
         'browser/extensions/api/webrtc_audio_private/webrtc_audio_private_api.h',
         'browser/extensions/api/webrtc_logging_private/webrtc_logging_private_api.cc',
         'browser/extensions/api/webrtc_logging_private/webrtc_logging_private_api.h',
         'browser/extensions/api/webstore_private/webstore_private_api.cc',
         'browser/extensions/api/webstore_private/webstore_private_api.h',
+        'browser/extensions/api/webstore/webstore_api.cc',
+        'browser/extensions/api/webstore/webstore_api.h',
         'browser/extensions/api/webview/webview_api.cc',
         'browser/extensions/api/webview/webview_api.h',
         'browser/extensions/app_icon_loader.h',
         'browser/extensions/app_icon_loader_impl.cc',
         'browser/extensions/app_icon_loader_impl.h',
         'browser/extensions/app_sync_bundle.cc',
         'browser/extensions/app_sync_bundle.h',
         'browser/extensions/app_sync_data.cc',
         'browser/extensions/app_sync_data.h',
         'browser/extensions/blacklist.cc',
@@ skipping 578 matching lines @@
       'type': 'static_library',
       'sources': [ 'browser/extensions/api/cast_channel/cast_channel.proto' ],
       'variables': {
           'proto_in_dir': 'browser/extensions/api/cast_channel',
           'proto_out_dir': 'chrome/browser/extensions/api/cast_channel',
       },
       'includes': [ '../build/protoc.gypi' ]
     },
   ],  # 'conditions'
 }