[Layout API] Add viewRect() to LayoutViewItem and use it in FrameView

third_party/WebKit/Source/core/layout/api/LayoutViewItem.h

 
 // Copyright 2016 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 LayoutViewItem_h
 #define LayoutViewItem_h
 
 #include "core/layout/LayoutView.h"
 #include "core/layout/api/LayoutBlockItem.h"
@@ skipping 32 matching lines @@
     bool hasPendingSelection() const
     {
         return toView()->hasPendingSelection();
     }
 
     IntRect documentRect() const
     {
         return toView()->documentRect();
     }
 
+    LayoutRect viewRect() const
+    {
+        return toView()->viewRect();
+    }
+
     IntSize layoutSize(IncludeScrollbarsInRect scrollbars = ExcludeScrollbars) const
     {
         return toView()->layoutSize(scrollbars);
     }
 
     LayoutRect overflowClipRect(const LayoutPoint& location, OverlayScrollbarSizeRelevancy scrollbars = IgnoreOverlayScrollbarSize) const
     {
         return toView()->overflowClipRect(location, scrollbars);
     }
 
 private:
     LayoutView* toView() { return toLayoutView(layoutObject()); }
     const LayoutView* toView() const { return toLayoutView(layoutObject()); }
 };
 
 } // namespace blink
 
 #endif // LayoutViewItem_h