Implement 'will-change' parsing

Source/core/frame/UseCounter.cpp

 
 /*
  * Copyright (C) 2012 Google, Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 479 matching lines @@
     case CSSPropertyMaskSourceType: return 435;
     case CSSPropertyIsolation: return 436;
     case CSSPropertyObjectPosition: return 437;
     case CSSPropertyInternalCallback: return 438;
     case CSSPropertyShapeImageThreshold: return 439;
     case CSSPropertyColumnFill: return 440;
     case CSSPropertyTextJustify: return 441;
     case CSSPropertyTouchActionDelay: return 442;
     case CSSPropertyJustifySelf: return 443;
     case CSSPropertyScrollBehavior: return 444;
+    case CSSPropertyWillChange: return 445;
 
     // Add new features above this line (don't change the assigned numbers of the existing
     // items) and update maximumCSSSampleId() with the new maximum value.
 
     // Internal properties should not be counted.
     case CSSPropertyInternalMarqueeDirection:
     case CSSPropertyInternalMarqueeIncrement:
     case CSSPropertyInternalMarqueeRepetition:
     case CSSPropertyInternalMarqueeSpeed:
     case CSSPropertyInternalMarqueeStyle:
     case CSSPropertyInvalid:
         ASSERT_NOT_REACHED();
         return 0;
     }
 
     ASSERT_NOT_REACHED();
     return 0;
 }
 
-static int maximumCSSSampleId() { return 444; }
+static int maximumCSSSampleId() { return 445; }
 
 UseCounter::UseCounter()
 {
     m_CSSFeatureBits.ensureSize(lastCSSProperty + 1);
     m_CSSFeatureBits.clearAll();
 }
 
 UseCounter::~UseCounter()
 {
     // We always log PageDestruction so that we have a scale for the rest of the features.
@@ skipping 226 matching lines @@
 UseCounter* UseCounter::getFrom(const StyleSheetContents* sheetContents)
 {
     // FIXME: We may want to handle stylesheets that have multiple owners
     //        http://crbug.com/242125
     if (sheetContents && sheetContents->hasSingleOwnerNode())
         return getFrom(sheetContents->singleOwnerDocument());
     return 0;
 }
 
 } // namespace WebCore