Use count strings as keyframes/animation-name identifiers

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 2906 matching lines @@
     if (validUnit(value, FNumber | FNonNeg))
         return createPrimitiveNumericValue(value);
     return nullptr;
 }
 
 PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseAnimationName()
 {
     CSSParserValue* value = m_valueList->current();
     // FIXME: Strings are not valid as per spec
     if (value->unit == CSSPrimitiveValue::CSS_STRING || value->unit == CSSPrimitiveValue::CSS_IDENT) {
+        if (value->unit == CSSPrimitiveValue::CSS_STRING)
+            m_context.useCounter()->count(UseCounter::QuotedAnimationName);
         if (value->id == CSSValueNone || (value->unit == CSSPrimitiveValue::CSS_STRING && equalIgnoringCase(value->string, "none")))
             return cssValuePool().createIdentifierValue(CSSValueNone);
         return createPrimitiveStringValue(value);
     }
     return nullptr;
 }
 
 PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseAnimationPlayState()
 {
     CSSParserValue* value = m_valueList->current();
@@ skipping 5404 matching lines @@
             return nullptr;
         a = args->next();
 
         argNumber++;
     }
 
     return transformValue.release();
 }
 
 } // namespace blink