Extend content::DesktopMediaID to allow Aura windows as capture sources.

content/content_tests.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': 'test_support_content',
       'type': 'static_library',
       'dependencies': [
@@ skipping 697 matching lines @@
         ['enable_webrtc==1 and (OS=="linux" or OS=="mac" or OS=="win")', {
           'sources': [
             'browser/renderer_host/media/desktop_capture_device_unittest.cc',
           ],
           'dependencies': [
             '../third_party/webrtc/modules/modules.gyp:desktop_capture',
           ],
         }],
         ['enable_webrtc==1 and chromeos==1', {
           'sources': [
-            'browser/renderer_host/media/desktop_capture_device_ash_unittest.cc',
+            'browser/renderer_host/media/desktop_capture_device_aura_unittest.cc',
           ],
         }],
         # TODO(jrg): remove the OS=="android" section?
         # http://crbug.com/113172
         # Understand better how media_stream_ is tied into Chromium.
         ['enable_webrtc==0 and OS=="android"', {
           'sources/': [
             ['exclude', '^renderer/media/media_stream_'],
           ],
         }],
@@ skipping 909 matching lines @@
                   'files': ['<(PRODUCT_DIR)/libnpapi_test_plugin.so'],
                 },
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }