Initial step of removing CSS zoom related properties.

sky/engine/core/animation/css/CSSPropertyEquality.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/animation/css/CSSPropertyEquality.h"
 
 #include "core/animation/css/CSSAnimations.h"
 #include "core/rendering/style/DataEquivalency.h"
 #include "core/rendering/style/RenderStyle.h"
@@ skipping 212 matching lines @@
     case CSSPropertyTransformOrigin:
         return a.transformOriginX() == b.transformOriginX() && a.transformOriginY() == b.transformOriginY() && a.transformOriginZ() == b.transformOriginZ();
     case CSSPropertyWidows:
         return a.widows() == b.widows();
     case CSSPropertyWidth:
         return a.width() == b.width();
     case CSSPropertyWordSpacing:
         return a.wordSpacing() == b.wordSpacing();
     case CSSPropertyZIndex:
         return a.zIndex() == b.zIndex();
-    case CSSPropertyZoom:
-        return a.zoom() == b.zoom();
     default:
         ASSERT_NOT_REACHED();
         return true;
     }
 }
 
 }