Compute effective touch action in StyleAdjuster.

third_party/WebKit/Source/core/layout/LayoutBox.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2006, 2007 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 971 matching lines @@
   bool CanBeScrolledAndHasScrollableArea() const;
   virtual bool CanBeProgramaticallyScrolled() const;
   virtual void Autoscroll(const IntPoint&);
   bool CanAutoscroll() const;
   IntSize CalculateAutoscrollDirection(
       const IntPoint& point_in_root_frame) const;
   static LayoutBox* FindAutoscrollable(LayoutObject*);
   virtual void StopAutoscroll() {}
 
   DISABLE_CFI_PERF bool HasAutoVerticalScrollbar() const {
-    return HasOverflowClip() &&
-           (Style()->OverflowY() == EOverflow::kAuto ||
-            Style()->OverflowY() == EOverflow::kWebkitPagedY ||
-            Style()->OverflowY() == EOverflow::kOverlay);
+    return HasOverflowClip() && Style()->HasAutoVerticalScroll();
   }
   DISABLE_CFI_PERF bool HasAutoHorizontalScrollbar() const {
-    return HasOverflowClip() && (Style()->OverflowX() == EOverflow::kAuto ||
-                                 Style()->OverflowX() == EOverflow::kOverlay);
+    return HasOverflowClip() && Style()->HasAutoHorizontalScroll();
   }
   DISABLE_CFI_PERF bool ScrollsOverflow() const {
-    return ScrollsOverflowX() || ScrollsOverflowY();
+    return HasOverflowClip() && Style()->ScrollsOverflow();
   }
   virtual bool ShouldPlaceBlockDirectionScrollbarOnLogicalLeft() const {
     return Style()->ShouldPlaceBlockDirectionScrollbarOnLogicalLeft();
   }
 
   bool HasScrollableOverflowX() const {
     return ScrollsOverflowX() &&
            PixelSnappedScrollWidth() != PixelSnappedClientWidth();
   }
   bool HasScrollableOverflowY() const {
     return ScrollsOverflowY() &&
            PixelSnappedScrollHeight() != PixelSnappedClientHeight();
   }
   virtual bool ScrollsOverflowX() const {
-    return HasOverflowClip() && (Style()->OverflowX() == EOverflow::kScroll ||
-                                 HasAutoHorizontalScrollbar());
+    return HasOverflowClip() && Style()->ScrollsOverflowX();
   }
   virtual bool ScrollsOverflowY() const {
-    return HasOverflowClip() && (Style()->OverflowY() == EOverflow::kScroll ||
-                                 HasAutoVerticalScrollbar());
+    return HasOverflowClip() && Style()->ScrollsOverflowY();
   }
 
   // Elements such as the <input> field override this to specify that they are
   // scrollable outside the context of the CSS overflow style
   virtual bool IsIntrinsicallyScrollable(
       ScrollbarOrientation orientation) const {
     return false;
   }
 
   bool HasUnsplittableScrollingOverflow() const;
@@ skipping 691 matching lines @@
          break_value == EBreakBetween::kLeft ||
          break_value == EBreakBetween::kPage ||
          break_value == EBreakBetween::kRecto ||
          break_value == EBreakBetween::kRight ||
          break_value == EBreakBetween::kVerso;
 }
 
 }  // namespace blink
 
 #endif  // LayoutBox_h