Rename "paint invalidation rect" etc. to "visual rect".

third_party/WebKit/Source/core/paint/PaintInvalidationCapableScrollableArea.h

 // Copyright 2015 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 PaintInvalidationCapableScrollableArea_h
 #define PaintInvalidationCapableScrollableArea_h
 
 #include "core/CoreExport.h"
 #include "platform/geometry/LayoutRect.h"
 #include "platform/scroll/ScrollableArea.h"
@@ skipping 14 matching lines @@
  public:
   PaintInvalidationCapableScrollableArea()
       : m_horizontalScrollbarPreviouslyWasOverlay(false),
         m_verticalScrollbarPreviouslyWasOverlay(false) {}
 
   void willRemoveScrollbar(Scrollbar&, ScrollbarOrientation) override;
 
   void invalidatePaintOfScrollControlsIfNeeded(const PaintInvalidationState&);
   void invalidatePaintOfScrollControlsIfNeeded(const PaintInvalidatorContext&);
 
-  // Should be called when the previous paint invalidation rects are no longer
-  // valid.
-  void clearPreviousPaintInvalidationRects();
+  // Should be called when the previous visual rects are no longer valid.
+  void clearPreviousVisualRects();
 
   virtual IntRect scrollCornerAndResizerRect() const {
     return scrollCornerRect();
   }
 
   LayoutRect visualRectForScrollbarParts() const override;
 
  private:
   virtual LayoutScrollbarPart* scrollCorner() const = 0;
   virtual LayoutScrollbarPart* resizer() const = 0;
 
   void scrollControlWasSetNeedsPaintInvalidation() override;
 
   bool m_horizontalScrollbarPreviouslyWasOverlay;
   bool m_verticalScrollbarPreviouslyWasOverlay;
-  LayoutRect m_horizontalScrollbarPreviousPaintInvalidationRect;
-  LayoutRect m_verticalScrollbarPreviousPaintInvalidationRect;
-  LayoutRect m_scrollCornerAndResizerPreviousPaintInvalidationRect;
+  LayoutRect m_horizontalScrollbarPreviousVisualRect;
+  LayoutRect m_verticalScrollbarPreviousVisualRect;
+  LayoutRect m_scrollCornerAndResizerPreviousVisualRect;
 };
 
 }  // namespace blink
 
 #endif  // PaintInvalidationCapableScrollableArea_h