Fix virtual/override/final usage in Source/platform/.

Source/platform/graphics/paint/DisplayItemListTest.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 "platform/graphics/paint/DisplayItemList.h"
 
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/paint/ClipPathRecorder.h"
 #include "platform/graphics/paint/ClipRecorder.h"
 #include "platform/graphics/paint/DrawingDisplayItem.h"
 #include "platform/graphics/paint/DrawingRecorder.h"
 #include <gtest/gtest.h>
 
 namespace blink {
 
 class DisplayItemListTest : public ::testing::Test {
 public:
     DisplayItemListTest()
         : m_originalSlimmingPaintEnabled(RuntimeEnabledFeatures::slimmingPaintEnabled()) { }
 
 protected:
     DisplayItemList& displayItemList() { return m_displayItemList; }
     const DisplayItems& newPaintListBeforeUpdate() { return displayItemList().m_newDisplayItems; }
 
 private:
-    virtual void SetUp() override
+    void SetUp() override
     {
         RuntimeEnabledFeatures::setSlimmingPaintEnabled(true);
     }
-    virtual void TearDown() override
+    void TearDown() override
     {
         RuntimeEnabledFeatures::setSlimmingPaintEnabled(m_originalSlimmingPaintEnabled);
     }
 
     DisplayItemList m_displayItemList;
     bool m_originalSlimmingPaintEnabled;
 };
 
 const DisplayItem::Type foregroundDrawingType = static_cast<DisplayItem::Type>(DisplayItem::DrawingPaintPhaseFirst + 4);
 const DisplayItem::Type backgroundDrawingType = DisplayItem::BoxDecorationBackground;
 const DisplayItem::Type clipType = DisplayItem::ClipFirst;
 
 class TestDisplayItemClient {
 public:
     TestDisplayItemClient(const String& name)
         : m_name(name)
     { }
 
     DisplayItemClient displayItemClient() const { return toDisplayItemClient(this); }
     String debugName() const { return m_name; }
 
 private:
     String m_name;
 };
 
 class TestDisplayItem : public DisplayItem {
 public:
     TestDisplayItem(const TestDisplayItemClient& client, Type type) : DisplayItem(client, type) { }
 
-    virtual void replay(GraphicsContext&) override final { ASSERT_NOT_REACHED(); }
-    virtual void appendToWebDisplayItemList(WebDisplayItemList*) const override final { ASSERT_NOT_REACHED(); }
+    void replay(GraphicsContext&) final { ASSERT_NOT_REACHED(); }
+    void appendToWebDisplayItemList(WebDisplayItemList*) const final { ASSERT_NOT_REACHED(); }
 };
 
 #ifndef NDEBUG
 #define TRACE_DISPLAY_ITEMS(i, expected, actual) \
     String trace = String::format("%d: ", (int)i) + "Expected: " + (expected).asDebugString() + " Actual: " + (actual).asDebugString(); \
     SCOPED_TRACE(trace.utf8().data());
 #else
 #define TRACE_DISPLAY_ITEMS(i, expected, actual)
 #endif
 
@@ skipping 621 matching lines @@
     drawRect(context, third, backgroundDrawingType, FloatRect(0, 0, 100, 100));
     displayItemList().commitNewDisplayItems();
 
     // Empty clips should have been optimized out.
     EXPECT_DISPLAY_LIST(displayItemList().displayItems(), 2,
         TestDisplayItem(first, backgroundDrawingType),
         TestDisplayItem(third, backgroundDrawingType));
 }
 
 } // namespace blink