Adding the ability to use a simulated clock for unit tests.

webrtc/base/base.gyp

 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 {
   'includes': [ '../build/common.gypi', ],
@@ skipping 105 matching lines @@
         'random.h',
         'rate_statistics.cc',
         'rate_statistics.h',
         'ratetracker.cc',
         'ratetracker.h',
         'refcount.h',
         'safe_conversions.h',
         'safe_conversions_impl.h',
         'scoped_ptr.h',
         'scoped_ref_ptr.h',
+        'simulatedclock.cc',
+        'simulatedclock.h',
         'stringencode.cc',
         'stringencode.h',
         'stringutils.cc',
         'stringutils.h',
         'swap_queue.h',
         'systeminfo.cc',
         'systeminfo.h',
         'template_util.h',
         'thread_annotations.h',
         'thread_checker.h',
@@ skipping 506 matching lines @@
     },
     {
      'target_name': 'gtest_prod',
       'type': 'static_library',
       'sources': [
         'gtest_prod_util.h',
       ],
     },
   ],
 }