Fix unit test style in core/{animation,css,fetch,frame,layout,style,timing}/.

Source/core/layout/LayoutThemeTest.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/layout/LayoutTheme.h"
 
 #include "core/dom/NodeComputedStyle.h"
 #include "core/frame/FrameView.h"
 #include "core/html/HTMLDocument.h"
 #include "core/html/HTMLElement.h"
 #include "core/style/ComputedStyle.h"
 #include "core/page/FocusController.h"
 #include "core/page/Page.h"
 #include "core/testing/DummyPageHolder.h"
 #include "platform/graphics/Color.h"
 #include <gtest/gtest.h>
 
-using namespace blink;
-
-namespace {
+namespace blink {
 
 class LayoutThemeTest : public ::testing::Test {
-
 protected:
-    virtual void SetUp() override;
+    void SetUp() override;
     HTMLDocument& document() const { return *m_document; }
     void setHtmlInnerHTML(const char* htmlContent);
 
 private:
     OwnPtr<DummyPageHolder> m_dummyPageHolder;
     HTMLDocument* m_document;
 };
 
 void LayoutThemeTest::SetUp()
 {
@@ skipping 45 matching lines @@
     // Change focus ring color.
     LayoutTheme::theme().setCustomFocusRingColor(customColor);
     Page::platformColorsChanged();
     document().view()->updateLayoutAndStyleForPainting();
 
     // Check that the focus ring color is updated.
     EXPECT_NE(BNONE, outlineStyle(span));
     EXPECT_EQ(customColor, outlineColor(span));
 }
 
-}
+} // namespace blink