Make CSSToStyleMap static.

Source/core/css/resolver/StyleBuilderCustom.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
@@ skipping 600 matching lines @@
     } else if (primitiveValue->isNumber()) {
         resetEffectiveZoom(state);
         if (float number = primitiveValue->getFloatValue())
             state.setZoom(number);
     }
 }
 
 void StyleBuilderFunctions::applyValueCSSPropertyWebkitBorderImage(StyleResolverState& state, CSSValue* value)
 {
     NinePieceImage image;
-    state.styleMap().mapNinePieceImage(state.style(), CSSPropertyWebkitBorderImage, value, image);
+    CSSToStyleMap::mapNinePieceImage(state, CSSPropertyWebkitBorderImage, value, image);
     state.style()->setBorderImage(image);
 }
 
 void StyleBuilderFunctions::applyValueCSSPropertyWebkitClipPath(StyleResolverState& state, CSSValue* value)
 {
     if (value->isPrimitiveValue()) {
         CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
         if (primitiveValue->getValueID() == CSSValueNone) {
             state.style()->setClipPath(nullptr);
         } else if (primitiveValue->isShape()) {
@@ skipping 278 matching lines @@
         return;
     case CSSValueSuper:
         svgStyle.setBaselineShift(BS_SUPER);
         return;
     default:
         ASSERT_NOT_REACHED();
     }
 }
 
 } // namespace blink