Properly set loopback device ID for system audio capture.

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, },
+      'variables': {
+        'enable_wexit_time_destructors': 1,
+        'use_cras%': 0,

[DaleCurtis, 2013/08/07 18:43:11]

Should this be in build/common.gypi instead?

[hshi1, 2013/08/07 18:50:24]

Great suggestion! Yes I agree this should just go to common.gypi and we won't
have to worry about individual gypi's. Done.

+      },
       'dependencies': [
         # NOTE: New dependencies should generally be added in the OS!="ios"
         # dependencies block below, rather than here.
         'browser/search_engines/prepopulated_engines.gyp:prepopulated_engines',
         'browser_ui',
         'cert_logger_proto',
         'chrome_resources.gyp:chrome_extra_resources',
         'chrome_resources.gyp:chrome_resources',
         'chrome_resources.gyp:chrome_strings',
         'chrome_resources.gyp:platform_locale_settings',
@@ skipping 2801 matching lines @@
                 ['exclude', '^browser/lifetime/application_lifetime_win.cc'],
               ],
               'dependencies': [
                 'launcher_support',
                 '../ui/metro_viewer/metro_viewer.gyp:metro_viewer_messages',
                 '../win8/win8.gyp:metro_viewer',
               ],
             }],
           ],
         }],
+        ['use_cras==1', {
+          'defines': [
+            'USE_CRAS',
+          ],
+        }],
         ['ui_compositor_image_transport==1', {
           'dependencies': [
             '../ui/gl/gl.gyp:gl',
           ],
         }],
         ['os_posix == 1 and OS != "mac" and OS != "ios" and OS != "android"', {
           'link_settings': {
             'libraries': [
               '-lXss',
             ],
@@ skipping 600 matching lines @@
             'package_name': 'org/chromium/chrome/browser/ui/toolbar',
             'template_deps': ['browser/ui/toolbar/toolbar_model_security_level_list.h'],
           },
           'includes': [ '../build/android/java_cpp_template.gypi' ],
         },
       ],
      },
     ],
   ],
 }