renderer: implement multiple permission requesting

content/content_browser.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.
 
 {
   'dependencies': [
     '../base/base.gyp:base_static',
     '../components/url_formatter/url_formatter.gyp:url_formatter',
     '../crypto/crypto.gyp:crypto',
     '../device/battery/battery.gyp:device_battery',
@@ skipping 1082 matching lines @@
       'browser/notifications/notification_event_dispatcher_impl.cc',
       'browser/notifications/notification_event_dispatcher_impl.h',
       'browser/notifications/notification_id_generator.cc',
       'browser/notifications/notification_id_generator.h',
       'browser/notifications/notification_message_filter.cc',
       'browser/notifications/notification_message_filter.h',
       'browser/notifications/page_notification_delegate.cc',
       'browser/notifications/page_notification_delegate.h',
       'browser/notifications/platform_notification_context_impl.cc',
       'browser/notifications/platform_notification_context_impl.h',
+      'browser/permissions/permission_pending_request.cc',
+      'browser/permissions/permission_pending_request.h',
       'browser/permissions/permission_service_context.cc',
       'browser/permissions/permission_service_context.h',
       'browser/permissions/permission_service_impl.cc',
       'browser/permissions/permission_service_impl.h',
       'browser/power_monitor_message_broadcaster.cc',
       'browser/power_monitor_message_broadcaster.h',
       'browser/power_profiler/power_data_provider.h',
       'browser/power_profiler/power_event.cc',
       'browser/power_profiler/power_event.h',
       'browser/power_profiler/power_profiler_observer.h',
@@ skipping 1034 matching lines @@
       'sources': [
         'browser/vr/vr_device.cc',
         'browser/vr/vr_device.h',
         'browser/vr/vr_device_manager.cc',
         'browser/vr/vr_device_manager.h',
         'browser/vr/vr_device_provider.h',
       ]
     }],
   ],
 }