Chromium side changes to add the ledger API.

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 961 matching lines @@
             'browser/extensions/updater/local_extension_cache.cc',
             'browser/extensions/updater/local_extension_cache.h',
           ],
         }],
         ['use_ash==1', {
           'sources': [
             'browser/extensions/api/tabs/ash_panel_contents.cc',
             'browser/extensions/api/tabs/ash_panel_contents.h',
           ],
         }],
+        ['branding=="Chrome" and chromeos==1', {
+          'dependencies': [
+            'browser/extensions/api/ledger/ledger.gyp:ledger_api',
+          ],
+        }],
         ['enable_extensions==0', {
           'sources!': [
             'browser/extensions/browser_context_keyed_service_factories.cc',
             'browser/extensions/browser_context_keyed_service_factories.h',
           ],
           'sources/': [
             # Handle files in browser/extensions/api. Exclude everything by default, white list
             # files if they are needed for linking.
             # TODO: The re-includes should go away or shrink as extensions are refactored to be
             # less intertwined in the main codebase.
@@ skipping 228 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'
 }