cc: Remove forbidden using namespace directives.

cc/layer_tree_host_impl_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/layer_tree_host_impl.h"
 
 #include <cmath>
 
@@ skipping 31 matching lines @@
 #include "cc/video_layer_impl.h"
 #include "media/base/media.h"
 #include "media/base/video_frame.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/size_conversions.h"
 #include "ui/gfx/vector2d_conversions.h"
 #include <public/WebVideoFrame.h>
 #include <public/WebVideoFrameProvider.h>
 
-using namespace cc;
 using namespace LayerTestCommon;
 using namespace WebKit;
 using namespace WebKitTests;
 
 using media::VideoFrame;
 using ::testing::Mock;
 using ::testing::Return;
 using ::testing::AnyNumber;
 using ::testing::AtLeast;
 using ::testing::_;
 
+namespace cc {
 namespace {
 
 // This test is parametrized to run all tests with the
 // Settings::pageScalePinchZoomEnabled field enabled and disabled.
 class LayerTreeHostImplTest : public testing::TestWithParam<bool>,
                                 public LayerTreeHostImplClient {
 public:
     LayerTreeHostImplTest()
         : m_proxy(scoped_ptr<Thread>(NULL))
         , m_alwaysImplThread(&m_proxy)
@@ skipping 4341 matching lines @@
         LayerTreeHostImpl::removeRenderPasses(LayerTreeHostImpl::CullRenderPassesWithCachedTextures(*renderer), testData);
         verifyRenderPassTestData(removeRenderPassesCases[testCaseIndex], testData);
         testCaseIndex++;
     }
 }
 
 INSTANTIATE_TEST_CASE_P(LayerTreeHostImplTests,
                         LayerTreeHostImplTest,
                         ::testing::Values(false, true));
 
-}  // anonymous namespace
+}  // namespace
+}  // namespace cc