Get rid of ensureStyleResolver().

sky/engine/core/html/canvas/CanvasRenderingContext2D.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008 Dirk Schulze <krit@webkit.org>
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  * Copyright (C) 2012, 2013 Intel Corporation. All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
  *
@@ skipping 1718 matching lines @@
     // Now map the font property longhands into the style.
     CSSPropertyValue properties[] = {
         CSSPropertyValue(CSSPropertyFontFamily, *parsedStyle),
         CSSPropertyValue(CSSPropertyFontStyle, *parsedStyle),
         CSSPropertyValue(CSSPropertyFontVariant, *parsedStyle),
         CSSPropertyValue(CSSPropertyFontWeight, *parsedStyle),
         CSSPropertyValue(CSSPropertyFontSize, *parsedStyle),
         CSSPropertyValue(CSSPropertyLineHeight, *parsedStyle),
     };
 
-    StyleResolver& styleResolver = canvas()->document().ensureStyleResolver();
+    StyleResolver& styleResolver = canvas()->document().styleResolver();
     styleResolver.applyPropertiesToStyle(properties, WTF_ARRAY_LENGTH(properties), newStyle.get());
 
 #if !ENABLE(OILPAN)
     if (state().m_realizedFont)
         static_cast<CSSFontSelector*>(state().m_font.fontSelector())->unregisterForInvalidationCallbacks(&modifiableState());
 #endif
     modifiableState().m_font = newStyle->font();
     modifiableState().m_font.update(canvas()->document().styleEngine()->fontSelector());
     modifiableState().m_realizedFont = true;
     canvas()->document().styleEngine()->fontSelector()->registerForInvalidationCallbacks(&modifiableState());
@@ skipping 494 matching lines @@
 
 unsigned CanvasRenderingContext2D::hitRegionsCount() const
 {
     if (m_hitRegionManager)
         return m_hitRegionManager->getHitRegionsCount();
 
     return 0;
 }
 
 } // namespace blink