Fix unit test style in Source/platform/, part 1.

Source/platform/SharedBufferTest.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 21 matching lines @@
 #include "platform/SharedBuffer.h"
 
 #include "platform/TestingPlatformSupport.h"
 #include "public/platform/WebDiscardableMemory.h"
 #include "wtf/RefPtr.h"
 #include "wtf/Vector.h"
 #include <algorithm>
 #include <cstdlib>
 #include <gtest/gtest.h>
 
-using namespace blink;
-
-namespace {
+namespace blink {
 
 TEST(SharedBufferTest, getAsBytes)
 {
     char testData0[] = "Hello";
     char testData1[] = "World";
     char testData2[] = "Goodbye";
 
     RefPtr<SharedBuffer> sharedBuffer = SharedBuffer::create(testData0, strlen(testData0));
     sharedBuffer->append(testData1, strlen(testData1));
     sharedBuffer->append(testData2, strlen(testData2));
@@ skipping 93 matching lines @@
     ASSERT_EQ(0, memcmp(data, testData.data(), length));
 
     // Do another append + merge the segments again.
     size_t previousTestDataSize = testData.size();
     testData.resize(2 * previousTestDataSize);
     std::generate(testData.begin() + previousTestDataSize, testData.end(), &std::rand);
     sharedBuffer->append(testData.data() + previousTestDataSize, previousTestDataSize);
     ASSERT_EQ(0, memcmp(data, testData.data(), length));
 }
 
-} // namespace
+} // namespace blink