cc: Unify namespaces for all test files

cc/test/tiled_layer_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/tiled_layer_test_common.h"
 
 using cc::LayerTilingData;
 using cc::LayerUpdater;
 using cc::PriorityCalculator;
 using cc::PrioritizedResource;
@@ skipping 152 matching lines @@
     *contentsScaleX = static_cast<float>(m_forcedContentBounds.width()) / bounds().width();
     *contentsScaleY = static_cast<float>(m_forcedContentBounds.height()) / bounds().height();
     *contentBounds = m_forcedContentBounds;
 }
 
 void FakeTiledLayerWithScaledBounds::didUpdateBounds()
 {
     drawProperties().content_bounds = m_forcedContentBounds;
 }
 
-} // namespace
+}  // namespace cc