Let Flash join and be controlled by media session

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',
     '../cc/cc.gyp:cc',
     '../cc/cc.gyp:cc_surfaces',
     '../components/components.gyp:display_compositor',
@@ skipping 1769 matching lines @@
       'browser/compositor/software_output_device_x11.h',
       'browser/context_factory.cc',
       'browser/renderer_host/browser_compositor_view_mac.h',
       'browser/renderer_host/browser_compositor_view_mac.mm',
       'browser/renderer_host/delegated_frame_host.cc',
       'browser/renderer_host/delegated_frame_host.h',
       'browser/renderer_host/resize_lock.cc',
       'browser/renderer_host/resize_lock.h',
     ],
     'plugin_browser_sources': [
+      'browser/media/session/pepper_playback_observer.cc',
+      'browser/media/session/pepper_playback_observer.h',
+      'browser/media/session/pepper_player_delegate.cc',
+      'browser/media/session/pepper_player_delegate.h',
       'browser/pepper_flash_settings_helper_impl.cc',
       'browser/pepper_flash_settings_helper_impl.h',
       'browser/plugin_content_origin_whitelist.cc',
       'browser/plugin_content_origin_whitelist.h',
       'browser/plugin_data_remover_impl.cc',
       'browser/plugin_data_remover_impl.h',
       'browser/plugin_private_storage_helper.cc',
       'browser/plugin_private_storage_helper.h',
       'browser/plugin_service_impl.cc',
       'browser/plugin_service_impl.h',
@@ skipping 392 matching lines @@
       ],
     }],
     ['OS != "mac" and OS != "android"', {
       'sources!': [
         'browser/gpu/gpu_surface_tracker.cc',
         'browser/gpu/gpu_surface_tracker.h',
       ],
     }],
   ],
 }