Remove explicit enum values in EPosition.

third_party/WebKit/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/)
  *
@@ skipping 102 matching lines @@
   BorderPrecedenceColumnGroup,
   BorderPrecedenceColumn,
   BorderPrecedenceRowGroup,
   BorderPrecedenceRow,
   BorderPrecedenceCell
 };
 
 enum OutlineIsAuto { OutlineIsAutoOff = 0, OutlineIsAutoOn };
 
 enum EPosition {
-  StaticPosition = 0,
-  RelativePosition = 1,
-  AbsolutePosition = 2,
-  StickyPosition = 3,
-  // This value is required to pack our bits efficiently in LayoutObject.
-  FixedPosition = 6
+  StaticPosition,
+  RelativePosition,
+  AbsolutePosition,
+  StickyPosition,
+  FixedPosition
 };
 
 enum EMarginCollapse {
   MarginCollapseCollapse,
   MarginCollapseSeparate,
   MarginCollapseDiscard
 };
 
 // Box decoration attributes. Not inherited.
 
@@ skipping 472 matching lines @@
   ScrollSnapTypeNone,
   ScrollSnapTypeMandatory,
   ScrollSnapTypeProximity
 };
 
 enum AutoRepeatType { NoAutoRepeat, AutoFill, AutoFit };
 
 }  // namespace blink
 
 #endif  // ComputedStyleConstants_h