Fix unit test style in core/{dom,editing,html}/.

Source/core/editing/VisibleSelectionTest.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/editing/VisibleSelection.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/Range.h"
 #include "core/dom/Text.h"
 #include "core/html/HTMLElement.h"
 #include "core/testing/CoreTestHelpers.h"
 #include "core/testing/DummyPageHolder.h"
 #include <gtest/gtest.h>
 
 #define LOREM_IPSUM \
     "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor " \
     "incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud " \
     "exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure " \
     "dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur." \
     "Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt " \
     "mollit anim id est laborum."
 
 namespace blink {
 
 class VisibleSelectionTest : public ::testing::Test {
 protected:
-    virtual void SetUp() override;
+    void SetUp() override;
 
     Document& document() const { return m_dummyPageHolder->document(); }
 
     static PassRefPtrWillBeRawPtr<ShadowRoot> createShadowRootForElementWithIDAndSetInnerHTML(TreeScope&, const char* hostElementID, const char* shadowRootContent);
 
     void setBodyContent(const char*);
     PassRefPtrWillBeRawPtr<ShadowRoot> setShadowContent(const char*);
 
     // Helper function to set the VisibleSelection base/extent.
     void setSelection(VisibleSelection& selection, int base) { setSelection(selection, base, base); }
@@ skipping 200 matching lines @@
         selection.expandUsingGranularity(WordGranularity);
 
         RefPtrWillBeRawPtr<Range> range = selection.firstRange();
         EXPECT_EQ(0, range->startOffset());
         EXPECT_EQ(11, range->endOffset());
         EXPECT_EQ("Lorem ipsum", range->text());
     }
 }
 
 } // namespace blink