Removing duplicate 'using namespace blink;' in platform and web

Source/web/tests/RenderGeometryMapTest.cpp

 /*
  * Copyright (C) 2014 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 27 matching lines @@
 #include "public/platform/Platform.h"
 #include "public/platform/WebUnitTestSupport.h"
 #include "public/web/WebFrameClient.h"
 #include "web/WebLocalFrameImpl.h"
 #include "web/tests/FloatPointTestHelpers.h"
 #include "web/tests/FloatQuadTestHelpers.h"
 #include "web/tests/FrameTestHelpers.h"
 #include <gtest/gtest.h>
 
 using namespace blink;
-using namespace blink;
 
 class MockWebFrameClient : public WebFrameClient {
 };
 namespace {
 
 
 class RenderGeometryMapTest : public testing::Test {
 public:
     RenderGeometryMapTest()
         : m_baseURL("http://www.test.com/")
@@ skipping 330 matching lines @@
     rgm.pushMappingsToAncestor(getRenderBox(webView, "Col3"), nullptr);
     EXPECT_NEAR(8.0f + offset * 2.0f, rgm.mapToContainer(point, nullptr).x(), 0.1f);
     EXPECT_NEAR(8.0f, rgm.mapToContainer(point, nullptr).y(), 0.1f);
     EXPECT_NEAR(8.0f + offset * 2.0f, rectFromQuad(rgm.mapToContainer(rect, nullptr)).x(), 0.1f);
     EXPECT_NEAR(8.0f, rectFromQuad(rgm.mapToContainer(rect, nullptr)).y(), 0.1f);
     EXPECT_EQ(5.0f, rectFromQuad(rgm.mapToContainer(rect, nullptr)).width());
     EXPECT_EQ(3.0f, rectFromQuad(rgm.mapToContainer(rect, nullptr)).height());
 
 }
 } // namespace ::