Fix unit test style in Source/web/.

Source/web/tests/LayoutGeometryMapTest.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 26 matching lines @@
 #include "platform/testing/URLTestHelpers.h"
 #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;
+namespace blink {
 
 class MockWebFrameClient : public WebFrameClient {
 };
-namespace {
-
 
 class LayoutGeometryMapTest : public testing::Test {
 public:
     LayoutGeometryMapTest()
         : m_baseURL("http://www.test.com/")
     {
     }
 
-    virtual void TearDown()
+    void TearDown() override
     {
         Platform::current()->unitTestSupport()->unregisterAllMockedURLs();
     }
 
 protected:
     static LayoutBox* getFrameElement(const char* iframeName, WebView* webView, const WTF::AtomicString& elementId)
     {
         WebLocalFrameImpl* iframe = toWebLocalFrameImpl(webView->findFrameByName(WebString::fromUTF8(iframeName)));
         if (!iframe)
             return nullptr;
@@ skipping 315 matching lines @@
     rgm.popMappingsToAncestor(static_cast<DeprecatedPaintLayer*>(nullptr));
     rgm.pushMappingsToAncestor(getLayoutBox(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 ::
+
+} // namespace blink