Fix unit test style in Source/web/.

Source/web/tests/TopControlsTest.cpp

 /*
  * Copyright (C) 2015 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 22 matching lines @@
 #include "core/frame/FrameHost.h"
 #include "core/frame/LocalFrame.h"
 #include "core/layout/LayoutView.h"
 #include "core/page/Page.h"
 #include "platform/testing/URLTestHelpers.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebUnitTestSupport.h"
 #include "public/web/WebSettings.h"
 #include "web/WebLocalFrameImpl.h"
 #include "web/tests/FrameTestHelpers.h"
-
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
 
-using namespace blink;
-
-namespace {
+namespace blink {
 
 // These tests cover top controls scrolling on main-thread.
 // The animation for completing a partial show/hide is done in compositor so
 // it is not covered here.
 class TopControlsTest : public testing::Test {
 public:
     TopControlsTest()
         : m_baseURL("http://www.test.com/")
     {
         registerMockedHttpURLLoad("large-div.html");
         registerMockedHttpURLLoad("overflow-scrolling.html");
         registerMockedHttpURLLoad("iframe-scrolling.html");
         registerMockedHttpURLLoad("iframe-scrolling-inner.html");
     }
 
-    ~TopControlsTest()
+    ~TopControlsTest() override
     {
         Platform::current()->unitTestSupport()->unregisterAllMockedURLs();
     }
 
     WebViewImpl* initialize(const std::string& pageName = "large-div.html")
     {
         // Load a page with large body and set viewport size to 400x400 to ensure
         // main frame is scrollable.
         m_helper.initializeAndLoad(m_baseURL + pageName, true, 0, 0, &configureSettings);
 
@@ skipping 469 matching lines @@
     // Both states are permitted so controls can either show or hide
     verticalScroll(50.f);
     EXPECT_FLOAT_EQ(50, webView->topControls().contentOffset());
     EXPECT_POINT_EQ(IntPoint(0, 90), frame()->view()->scrollPosition());
 
     verticalScroll(-50.f);
     EXPECT_FLOAT_EQ(0, webView->topControls().contentOffset());
     EXPECT_POINT_EQ(IntPoint(0, 90), frame()->view()->scrollPosition());
 }
 
-} // namespace
+} // namespace blink