Should be able to scroll text in <input> fields with touch

Source/core/rendering/RenderBox.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 565 matching lines @@
     bool hasSameDirectionAs(const RenderBox* object) const { return style()->direction() == object->style()->direction(); }
 
     virtual void reportMemoryUsage(MemoryObjectInfo*) const OVERRIDE;
     static void reportStaticMembersMemoryUsage(MemoryInstrumentation*);
 
     ExclusionShapeOutsideInfo* exclusionShapeOutsideInfo() const
     {
         return isFloatingWithShapeOutside() && ExclusionShapeOutsideInfo::isEnabledFor(this) ? ExclusionShapeOutsideInfo::info(this) : 0;
     }
 
+    bool isScrollableWithoutScrollbars() const

[Rick Byers, 2013/05/30 16:15:00]

It seems a little confusing to me to add a case where scrolling is possible but
scrollsOverflowX returns false.

Why not just add this case to a condition of scrollsOverflowX (rather than
introduce a new concept)?  Will that cause scrollbars to get added, and if so
can you check at that point to make sure EOverflow actually permits scroll bars?

[bokan, 2013/05/30 18:23:51]

Fixed. Removed this method and moved the condition inside scrollsOverflowX. It
doesn't cause scrollbars to be created.

+    {
+        return parent() && parent()->isTextField() && hasOverflowClip();
+    }
+
 protected:
     virtual void willBeDestroyed();
 
     virtual void styleWillChange(StyleDifference, const RenderStyle* newStyle);
     virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
     virtual void updateFromStyle() OVERRIDE;
 
     LayoutRect backgroundPaintedExtent() const;
     virtual bool foregroundIsKnownToBeOpaqueInRect(const LayoutRect& localRect, unsigned maxDepthToTest) const;
     virtual bool computeBackgroundIsKnownToBeObscured() OVERRIDE;
@@ skipping 140 matching lines @@
         if (UNLIKELY(m_inlineBoxWrapper != 0))
             deleteLineBoxWrapper();
     }
 
     m_inlineBoxWrapper = boxWrapper;
 }
 
 } // namespace WebCore
 
 #endif // RenderBox_h