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 c2a551b15a44f95a4cdaacdb103c059ad928c7e6..b0785f581b69fde47d4e34d1a42f7bf248e8031d 100644
--- a/third_party/WebKit/Source/core/style/ComputedStyle.h
+++ b/third_party/WebKit/Source/core/style/ComputedStyle.h
@@ -814,6 +814,12 @@ class ComputedStyle : public ComputedStyleBase,
   static TouchAction InitialTouchAction() {
     return TouchAction::kTouchActionAuto;
   }
+  TouchAction GetEffectiveTouchAction() const {
+    return EffectiveTouchActionInternal();
+  }
+  void SetEffectiveTouchAction(TouchAction t) {
+    return SetEffectiveTouchActionInternal(t);
+  }
 
   // vertical-align
   static EVerticalAlign InitialVerticalAlign() {
@@ -1970,6 +1976,36 @@ 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 &&