Add PlatformFrameView class.

third_party/WebKit/Source/core/loader/EmptyClients.h

 /*
  * Copyright (C) 2006 Eric Seidel (eric@webkit.org)
  * Copyright (C) 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
@@ skipping 151 matching lines @@
 
   bool HasOpenedPopup() const override { return false; }
   PopupMenu* OpenPopupMenu(LocalFrame&, HTMLSelectElement&) override;
   DOMWindow* PagePopupWindowForTesting() const override { return nullptr; }
 
   void SetStatusbarText(const String&) override {}
 
   bool TabsToLinks() override { return false; }
 
   void InvalidateRect(const IntRect&) override {}
-  void ScheduleAnimation(LocalFrame*) override {}
+  void ScheduleAnimation(const PlatformFrameView*) override {}
 
   IntRect ViewportToScreen(const IntRect& r,
-                           const FrameViewBase*) const override {
+                           const PlatformFrameView*) const override {
     return r;
   }
   float WindowToViewportScalar(const float s) const override { return s; }
   WebScreenInfo GetScreenInfo() const override { return WebScreenInfo(); }
   void ContentsSizeChanged(LocalFrame*, const IntSize&) const override {}
 
   void ShowMouseOverURL(const HitTestResult&) override {}
 
   void SetToolTip(LocalFrame&, const String&, TextDirection) override {}
 
@@ skipping 285 matching lines @@
   Frame* NextSibling() const override { return nullptr; }
   Frame* FirstChild() const override { return nullptr; }
   void FrameFocused() const override {}
 };
 
 CORE_EXPORT void FillWithEmptyClients(Page::PageClients&);
 
 }  // namespace blink
 
 #endif  // EmptyClients_h