cc: Remove forbidden using namespace directives.

cc/tree_synchronizer_unittest.cc

 // Copyright 2011 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 "config.h"
 
 #include "cc/tree_synchronizer.h"
 
 #include <algorithm>
 
 #include "cc/layer.h"
 #include "cc/layer_animation_controller.h"
 #include "cc/layer_impl.h"
 #include "cc/proxy.h"
 #include "cc/single_thread_proxy.h"
 #include "cc/test/animation_test_common.h"
 #include "cc/test/fake_proxy.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-using namespace cc;
 using namespace WebKitTests;
 
+namespace cc {
 namespace {
 
 class MockLayerImpl : public LayerImpl {
 public:
     static scoped_ptr<MockLayerImpl> create(int layerId)
     {
         return make_scoped_ptr(new MockLayerImpl(layerId));
     }
     virtual ~MockLayerImpl()
     {
@@ skipping 367 matching lines @@
     layerTreeRoot->setLayerAnimationController(FakeLayerAnimationController::create(&dummy).PassAs<LayerAnimationController>());
 
     EXPECT_FALSE(static_cast<FakeLayerAnimationController*>(layerTreeRoot->layerAnimationController())->synchronizedAnimations());
 
     scoped_ptr<LayerImpl> layerImplTreeRoot = TreeSynchronizer::synchronizeTrees(layerTreeRoot.get(), scoped_ptr<LayerImpl>(), hostImpl.get());
     layerImplTreeRoot = TreeSynchronizer::synchronizeTrees(layerTreeRoot.get(), layerImplTreeRoot.Pass(), hostImpl.get());
 
     EXPECT_TRUE(static_cast<FakeLayerAnimationController*>(layerTreeRoot->layerAnimationController())->synchronizedAnimations());
 }
 
-}  // anonymous namespace
+}  // namespace
+}  // namespace cc