Initial implementation of font-size-adjust

Source/core/css/parser/CSSPropertyParser.cpp

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Intel Corporation. All rights reserved.
  *
@@ skipping 1034 matching lines @@
             }
             return false;
         }
         break;
     case CSSPropertyWebkitBoxReflect:
         if (id == CSSValueNone)
             validPrimitive = true;
         else
             parsedValue = parseReflect();
         break;
+    case CSSPropertyFontSizeAdjust: // none | <number>
+        ASSERT(RuntimeEnabledFeatures::cssFontSizeAdjustEnabled());
+        validPrimitive = (id == CSSValueNone) ? true : validUnit(value, FNumber | FNonNeg);
+        break;
     case CSSPropertyOpacity:
         validPrimitive = validUnit(value, FNumber);
         break;
     case CSSPropertyWebkitBoxFlex:
         validPrimitive = validUnit(value, FNumber);
         break;
     case CSSPropertyWebkitBoxFlexGroup:
         validPrimitive = validUnit(value, FInteger | FNonNeg);
         break;
     case CSSPropertyWebkitBoxOrdinalGroup:
@@ skipping 7406 matching lines @@
         }
     }
 
     if (!list->length())
         return nullptr;
 
     return list.release();
 }
 
 } // namespace blink