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

Source/web/RemoteFrameClientImpl.h

 // 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.
 
 #ifndef RemoteFrameClientImpl_h
 #define RemoteFrameClientImpl_h
 
 #include "core/frame/RemoteFrameClient.h"
 
 namespace blink {
 class WebRemoteFrameImpl;
 
 class RemoteFrameClientImpl final : public RemoteFrameClient {
 public:
     explicit RemoteFrameClientImpl(WebRemoteFrameImpl*);
 
     // FrameClient overrides:
-    virtual bool inShadowTree() const override;
-    virtual void willBeDetached() override;
-    virtual void detached(FrameDetachType) override;
-    virtual Frame* opener() const override;
-    virtual void setOpener(Frame*) override;
-    virtual Frame* parent() const override;
-    virtual Frame* top() const override;
-    virtual Frame* previousSibling() const override;
-    virtual Frame* nextSibling() const override;
-    virtual Frame* firstChild() const override;
-    virtual Frame* lastChild() const override;
-    virtual bool willCheckAndDispatchMessageEvent(SecurityOrigin*, MessageEvent*, LocalFrame*) const override;
+    bool inShadowTree() const override;
+    void willBeDetached() override;
+    void detached(FrameDetachType) override;
+    Frame* opener() const override;
+    void setOpener(Frame*) override;
+    Frame* parent() const override;
+    Frame* top() const override;
+    Frame* previousSibling() const override;
+    Frame* nextSibling() const override;
+    Frame* firstChild() const override;
+    Frame* lastChild() const override;
+    bool willCheckAndDispatchMessageEvent(SecurityOrigin*, MessageEvent*, LocalFrame*) const override;
 
     // RemoteFrameClient overrides:
-    virtual void navigate(const ResourceRequest&, bool shouldReplaceCurrentEntry) override;
-    virtual void reload(FrameLoadType, ClientRedirectPolicy) override;
-    virtual unsigned backForwardLength() override;
-    virtual void forwardInputEvent(Event*) override;
+    void navigate(const ResourceRequest&, bool shouldReplaceCurrentEntry) override;
+    void reload(FrameLoadType, ClientRedirectPolicy) override;
+    unsigned backForwardLength() override;
+    void forwardInputEvent(Event*) override;
 
     WebRemoteFrameImpl* webFrame() const { return m_webFrame; }
 
 private:
     WebRemoteFrameImpl* m_webFrame;
 };
 
 } // namespace blink
 
 #endif // RemoteFrameClientImpl_h