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

Source/web/tests/PinchViewportTest.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/frame/PinchViewport.h"
 
 #include "core/dom/Document.h"
 #include "core/frame/FrameHost.h"
@@ skipping 111 matching lines @@
     }
 
     void initializeWithAndroidSettings(void (*overrideSettingsFunc)(WebSettings*) = 0)
     {
         if (!overrideSettingsFunc)
             overrideSettingsFunc = &configureAndroidSettings;
         m_helper.initialize(true, 0, &m_mockWebViewClient, overrideSettingsFunc);
         webViewImpl()->setDefaultPageScaleLimits(0.25f, 5);
     }
 
-    virtual ~PinchViewportTest()
+    ~PinchViewportTest() override
     {
         Platform::current()->unitTestSupport()->unregisterAllMockedURLs();
     }
 
     void navigateTo(const std::string& url)
     {
         FrameTestHelpers::loadFrame(webViewImpl()->mainFrame(), url);
     }
 
     void forceFullCompositingUpdate()
@@ skipping 1603 matching lines @@
     webViewImpl()->handleInputEvent(pinchUpdate);
 
     PinchViewport& pinchViewport = webViewImpl()->page()->frameHost().pinchViewport();
     FrameView& frameView = *webViewImpl()->mainFrameImpl()->frameView();
 
     EXPECT_FLOAT_POINT_EQ(FloatPoint(50, 50), pinchViewport.location());
     EXPECT_FLOAT_POINT_EQ(FloatPoint(0, 0), frameView.scrollPositionDouble());
 }
 
 } // namespace