Aura overlay scrollbars adjust color for dark backgrounds

third_party/WebKit/Source/platform/scroll/ScrollableArea.h

 /*
  * Copyright (C) 2008, 2011 Apple Inc. 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
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 102 matching lines @@
   void contentAreaDidHide() const;
 
   void finishCurrentScrollAnimations() const;
 
   virtual void didAddScrollbar(Scrollbar&, ScrollbarOrientation);
   virtual void willRemoveScrollbar(Scrollbar&, ScrollbarOrientation);
 
   virtual void contentsResized();
 
   bool hasOverlayScrollbars() const;
-  void setScrollbarOverlayStyle(ScrollbarOverlayStyle);
-  void recalculateScrollbarOverlayStyle(Color);
-  ScrollbarOverlayStyle getScrollbarOverlayStyle() const {
-    return static_cast<ScrollbarOverlayStyle>(m_scrollbarOverlayStyle);
+  void setScrollbarOverlayColorTheme(ScrollbarOverlayColorTheme);
+  void recalculateScrollbarOverlayColorTheme(Color);
+  ScrollbarOverlayColorTheme getScrollbarOverlayColorTheme() const {
+    return static_cast<ScrollbarOverlayColorTheme>(
+        m_scrollbarOverlayColorTheme);
   }
 
   // This getter will create a ScrollAnimatorBase if it doesn't already exist.
   ScrollAnimatorBase& scrollAnimator() const;
 
   // This getter will return null if the ScrollAnimatorBase hasn't been created
   // yet.
   ScrollAnimatorBase* existingScrollAnimator() const {
     return m_scrollAnimator;
   }
@@ skipping 246 matching lines @@
   virtual void updateScrollOffset(const ScrollOffset&, ScrollType) = 0;
 
   virtual int lineStep(ScrollbarOrientation) const;
   virtual int pageStep(ScrollbarOrientation) const;
   virtual int documentStep(ScrollbarOrientation) const;
   virtual float pixelStep(ScrollbarOrientation) const;
 
   mutable Member<ScrollAnimatorBase> m_scrollAnimator;
   mutable Member<ProgrammaticScrollAnimator> m_programmaticScrollAnimator;
 
-  unsigned m_scrollbarOverlayStyle : 2;  // ScrollbarOverlayStyle
+  unsigned m_scrollbarOverlayColorTheme : 2;  // ScrollbarOverlayColorTheme

[bokan, 2016/10/21 16:57:14]

Just remove the comment, it adds nothing.

 
   unsigned m_scrollOriginChanged : 1;
 
   unsigned m_horizontalScrollbarNeedsPaintInvalidation : 1;
   unsigned m_verticalScrollbarNeedsPaintInvalidation : 1;
   unsigned m_scrollCornerNeedsPaintInvalidation : 1;
 
   // There are 6 possible combinations of writing mode and direction. Scroll
   // origin will be non-zero in the x or y axis if there is any reversed
   // direction or writing-mode. The combinations are:
   // writing-mode / direction     scrollOrigin.x() set    scrollOrigin.y() set
   // horizontal-tb / ltr          NO                      NO
   // horizontal-tb / rtl          YES                     NO
   // vertical-lr / ltr            NO                      NO
   // vertical-lr / rtl            NO                      YES
   // vertical-rl / ltr            YES                     NO
   // vertical-rl / rtl            YES                     YES
   IntPoint m_scrollOrigin;
 };
 
 }  // namespace blink
 
 #endif  // ScrollableArea_h