scheduler: Always create a real scheduler in unit tests

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.
 
 {
   'variables': {
     'layouttest_support_content_sources': [
       'public/test/layouttest_support.h',
       'public/test/nested_message_pump_android.cc',
       'public/test/nested_message_pump_android.h',
@@ skipping 856 matching lines @@
             'content.gyp:content_gpu',
             'content.gyp:content_plugin',
             'content.gyp:content_ppapi_plugin',
             'content.gyp:content_renderer',
             'content.gyp:content_utility',
             'content_shell_and_tests.gyp:content_shell_pak',
             '../cc/blink/cc_blink.gyp:cc_blink',
             '../cc/cc.gyp:cc',
             '../cc/cc_tests.gyp:cc_test_support',
             '../components/scheduler/scheduler.gyp:scheduler',
+            '../components/scheduler/scheduler.gyp:scheduler_test_support',
             '../gpu/blink/gpu_blink.gyp:gpu_blink',
             '../ipc/mojo/ipc_mojo.gyp:*',
             '../media/blink/media_blink.gyp:media_blink',
             '../media/media.gyp:media',
             '../media/midi/midi.gyp:midi',
             '../ppapi/ppapi_internal.gyp:ppapi_host',
             '../ppapi/ppapi_internal.gyp:ppapi_proxy',
             '../ppapi/ppapi_internal.gyp:ppapi_shared',
             '../ppapi/ppapi_internal.gyp:ppapi_unittest_shared',
             '../storage/storage_browser.gyp:storage',
@@ skipping 1276 matching lines @@
                   'files': ['<(PRODUCT_DIR)/libnpapi_test_plugin.so'],
                 },
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }