Implement direction-specific touch-action values (blink side)

Source/core/style/ComputedStyleConstants.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 468 matching lines @@
 
 enum GridAutoFlow {
     AutoFlowRow = InternalAutoFlowAlgorithmSparse | InternalAutoFlowDirectionRow,
     AutoFlowColumn = InternalAutoFlowAlgorithmSparse | InternalAutoFlowDirectionColumn,
     AutoFlowRowDense = InternalAutoFlowAlgorithmDense | InternalAutoFlowDirectionRow,
     AutoFlowColumnDense = InternalAutoFlowAlgorithmDense | InternalAutoFlowDirectionColumn
 };
 
 enum DraggableRegionMode { DraggableRegionNone, DraggableRegionDrag, DraggableRegionNoDrag };
 
-static const size_t TouchActionBits = 4;
+static const size_t TouchActionBits = 6;
 enum TouchAction {
     TouchActionAuto = 0x0,
     TouchActionNone = 0x1,
-    TouchActionPanX = 0x2,
-    TouchActionPanY = 0x4,
-    TouchActionPinchZoom = 0x8,
+    TouchActionPanLeft = 0x2,
+    TouchActionPanRight = 0x4,
+    TouchActionPanX = TouchActionPanLeft | TouchActionPanRight,
+    TouchActionPanUp = 0x8,
+    TouchActionPanDown = 0x10,
+    TouchActionPanY = TouchActionPanUp | TouchActionPanDown,
+    TouchActionPinchZoom = 0x20,
 };
 inline TouchAction operator| (TouchAction a, TouchAction b) { return TouchAction(int(a) | int(b)); }
 inline TouchAction& operator|= (TouchAction& a, TouchAction b) { return a = a | b; }
 inline TouchAction operator& (TouchAction a, TouchAction b) { return TouchAction(int(a) & int(b)); }
 inline TouchAction& operator&= (TouchAction& a, TouchAction b) { return a = a & b; }
 
 enum EIsolation { IsolationAuto, IsolationIsolate };
 
 enum ItemPosition {
     ItemPositionAuto,
@@ skipping 47 matching lines @@
 static const float maximumAllowedFontSize = 1000000.0f;
 
 enum TextIndentLine { TextIndentFirstLine, TextIndentEachLine };
 enum TextIndentType { TextIndentNormal, TextIndentHanging };
 
 enum CSSBoxType { BoxMissing = 0, MarginBox, BorderBox, PaddingBox, ContentBox };
 
 } // namespace blink
 
 #endif // ComputedStyleConstants_h