Compute effective touch action in StyleAdjuster.

third_party/WebKit/Source/core/style/ComputedStyle.h

Index: third_party/WebKit/Source/core/style/ComputedStyle.h
diff --git a/third_party/WebKit/Source/core/style/ComputedStyle.h b/third_party/WebKit/Source/core/style/ComputedStyle.h
index 99186c69ceaf060c2e7c582da5ed669512d8b6fe..5d15de97af4e9dd795ab6bd52d0b67fc7ea40785 100644
--- a/third_party/WebKit/Source/core/style/ComputedStyle.h
+++ b/third_party/WebKit/Source/core/style/ComputedStyle.h
@@ -837,6 +837,12 @@ class ComputedStyle : public ComputedStyleBase,
   }
   TouchAction GetTouchAction() const { return TouchActionInternal(); }
   void SetTouchAction(TouchAction t) { return SetTouchActionInternal(t); }
+  TouchAction GetEffectiveTouchAction() const {
+    return EffectiveTouchActionInternal();
+  }
+  void SetEffectiveTouchAction(TouchAction t) {
+    return SetEffectiveTouchActionInternal(t);
+  }
 
   // vertical-align
   static EVerticalAlign InitialVerticalAlign() {
@@ -1995,6 +2001,36 @@ class ComputedStyle : public ComputedStyleBase,
            OverflowY() == EOverflow::kWebkitPagedY;
   }
 
+  bool IsDisplayTableRowOrColumnType() const {
+    return Display() == EDisplay::kTableRow ||
+           Display() == EDisplay::kTableRowGroup ||
+           Display() == EDisplay::kTableColumn ||
+           Display() == EDisplay::kTableColumnGroup;
+  }
+
+  bool HasAutoHorizontalScroll() const {
+    return OverflowX() == EOverflow::kAuto ||
+           OverflowX() == EOverflow::kOverlay;
+  }
+
+  bool HasAutoVerticalScroll() const {
+    return OverflowY() == EOverflow::kAuto ||
+           OverflowY() == EOverflow::kWebkitPagedY ||
+           OverflowY() == EOverflow::kOverlay;
+  }
+
+  bool ScrollsOverflowX() const {
+    return OverflowX() == EOverflow::kScroll || HasAutoHorizontalScroll();
+  }
+
+  bool ScrollsOverflowY() const {
+    return OverflowY() == EOverflow::kScroll || HasAutoVerticalScroll();
+  }
+
+  bool ScrollsOverflow() const {
+    return ScrollsOverflowX() || ScrollsOverflowY();
+  }
+
   // Visibility utility functions.
   bool VisibleToHitTesting() const {
     return Visibility() == EVisibility::kVisible &&