Implement an IsAllowed function in the pepper PPB_Broker_Trusted API

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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 1645 matching lines @@
         'browser/renderer_host/chrome_render_widget_host_view_mac_delegate.h',
         'browser/renderer_host/chrome_render_widget_host_view_mac_delegate.mm',
         'browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc',
         'browser/renderer_host/chrome_resource_dispatcher_host_delegate.h',
         'browser/renderer_host/chrome_url_request_user_data.cc',
         'browser/renderer_host/chrome_url_request_user_data.h',
         'browser/renderer_host/offline_resource_throttle.cc',
         'browser/renderer_host/offline_resource_throttle.h',
         'browser/renderer_host/pepper/chrome_browser_pepper_host_factory.cc',
         'browser/renderer_host/pepper/chrome_browser_pepper_host_factory.h',
+        'browser/renderer_host/pepper/pepper_broker_host.cc',
+        'browser/renderer_host/pepper/pepper_broker_host.h',
         'browser/renderer_host/pepper/pepper_flash_device_id_host.cc',
         'browser/renderer_host/pepper/pepper_flash_device_id_host.h',
         'browser/renderer_host/pepper/pepper_talk_host.cc',
         'browser/renderer_host/pepper/pepper_talk_host.h',
         'browser/renderer_host/plugin_info_message_filter.cc',
         'browser/renderer_host/plugin_info_message_filter.h',
         'browser/renderer_host/safe_browsing_resource_throttle.cc',
         'browser/renderer_host/safe_browsing_resource_throttle.h',
         'browser/renderer_host/safe_browsing_resource_throttle_factory.cc',
         'browser/renderer_host/safe_browsing_resource_throttle_factory.h',
@@ skipping 1482 matching lines @@
             'proto_in_dir': '../third_party/cros_system_api/dbus',
             'proto_out_dir': 'chrome/browser/media_transfer_protocol',
           },
           'includes': ['../build/protoc.gypi'],
         },
       ],
      },
     ],
   ],
 }