cc: Remove forbidden using namespace directives.

cc/resource_provider_unittest.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 "config.h"
 
 #include "cc/resource_provider.h"
 
 #include "base/logging.h"
 #include "cc/graphics_context.h"
 #include "cc/scoped_ptr_deque.h"
 #include "cc/scoped_ptr_hash_map.h"
 #include "cc/test/compositor_fake_web_graphics_context_3d.h"
 #include "cc/test/fake_web_compositor_output_surface.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/khronos/GLES2/gl2.h"
 #include "third_party/khronos/GLES2/gl2ext.h"
 #include "ui/gfx/rect.h"
 #include <public/WebGraphicsContext3D.h>
 
-using namespace cc;
 using namespace WebKit;
 
+namespace cc {
 namespace {
 
 size_t textureSize(const gfx::Size& size, WGC3Denum format)
 {
     unsigned int componentsPerPixel = 4;
     unsigned int bytesPerComponent = 1;
     return size.width() * size.height() * componentsPerPixel * bytesPerComponent;
 }
 
 struct Texture {
@@ skipping 550 matching lines @@
         childResourceProvider->receiveFromParent(list);
     }
     EXPECT_EQ(0u, childResourceProvider->numResources());
 }
 
 INSTANTIATE_TEST_CASE_P(ResourceProviderTests,
                         ResourceProviderTest,
                         ::testing::Values(ResourceProvider::GLTexture,
                                           ResourceProvider::Bitmap));
 
-}  // anonymous namespace
+}  // namespace
+}  // namespace cc