Define ENABLE_MOBILE_YOUTUBE_PLUGIN on Android.

chrome/chrome_renderer.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.
 
 {
   'targets': [
     {
       'target_name': 'renderer',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 287 matching lines @@
           'dependencies': [
             '../third_party/mach_override/mach_override.gyp:mach_override',
           ],
         }],
         ['toolkit_uses_gtk == 1', {
           'dependencies': [
             '../build/linux/system.gyp:gtk',
             '../sandbox/sandbox.gyp:sandbox',
           ],
         }],
+        ['OS=="android"', {
+          'defines': [
+            'ENABLE_MOBILE_YOUTUBE_PLUGIN',
+          ],
+        }],
         ['OS=="win"', {
           'include_dirs': [
             '<(DEPTH)/third_party/wtl/include',
           ],
           'conditions': [
             ['win_use_allocator_shim==1', {
               'dependencies': [
                 '<(allocator_target)',
               ],
               'export_dependent_settings': [
                 '<(allocator_target)',
               ],
             }],
           ],
         }],
       ],
     },
   ],
 }