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 b830c36b80c508d85e58da4970b0bf360c9f6c7c..51e56e953bc9dd3928cf2c06637da516f5a4c595 100644
--- a/third_party/WebKit/Source/core/style/ComputedStyle.h
+++ b/third_party/WebKit/Source/core/style/ComputedStyle.h
@@ -890,6 +890,12 @@ 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() {
@@ -2061,6 +2067,36 @@ 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 &&