cc: Unify namespaces for all test files

cc/test/scheduler_test_common.cc

 // 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.
 
 #include "cc/test/scheduler_test_common.h"
 
 #include "base/logging.h"
 
-namespace WebKitTests {
+namespace cc {
 
 void FakeTimeSourceClient::onTimerTick()
 {
     m_tickCalled = true;
 }
 
 FakeThread::FakeThread()
 {
     reset();
 }
@@ skipping 52 matching lines @@
 base::TimeTicks FakeTimeSource::nextTickTime()
 {
     return base::TimeTicks();
 }
 
 base::TimeTicks FakeDelayBasedTimeSource::now() const
 {
     return m_now;
 }
 
-}
+}  // namespace cc