Fix unit test style in Source/platform/, part 2.

Source/platform/image-decoders/gif/GIFImageDecoderTest.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 11 matching lines @@
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
-
 #include "platform/image-decoders/gif/GIFImageDecoder.h"
 
 #include "platform/SharedBuffer.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebData.h"
 #include "public/platform/WebSize.h"
 #include "public/platform/WebUnitTestSupport.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/StringHasher.h"
 #include "wtf/Vector.h"
 #include <gtest/gtest.h>
 
-using namespace blink;
+namespace blink {
 
 namespace {
 
 const char decodersTestingDir[] = "Source/platform/image-decoders/testing";
 const char layoutTestResourcesDir[] = "LayoutTests/fast/images/resources";
 const char webTestsDataDir[] = "Source/web/tests/data";
 
 PassRefPtr<SharedBuffer> readFile(const char* dir, const char* fileName)
 {
     String filePath = Platform::current()->unitTestSupport()->webKitRootDir();
@@ skipping 76 matching lines @@
         for (size_t i = 0; i < skippingStep; ++i) {
             for (size_t j = 0; j < frameCount; j += skippingStep) {
                 SCOPED_TRACE(testing::Message() << "Random i:" << i << " j:" << j);
                 ImageFrame* frame = decoder->frameBufferAtIndex(j);
                 EXPECT_EQ(baselineHashes[j], hashSkBitmap(frame->getSkBitmap()));
             }
         }
     }
 }
 
-} // namespace
+} // anonymous namespace
 
 TEST(GIFImageDecoderTest, decodeTwoFrames)
 {
     OwnPtr<GIFImageDecoder> decoder = createDecoder();
 
     RefPtr<SharedBuffer> data = readFile(layoutTestResourcesDir, "animated.gif");
     ASSERT_TRUE(data.get());
     decoder->setData(data.get(), true);
     EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
 
@@ skipping 369 matching lines @@
 
         if (decoder->isSizeAvailable() && !frameSize.width() && !frameSize.height()) {
             frameSize = decoder->decodedSize();
             continue;
         }
 
         ASSERT_EQ(frameSize.width(), decoder->decodedSize().width());
         ASSERT_EQ(frameSize.height(), decoder->decodedSize().height());
     }
 }
+
+} // namespace blink