Remove document param from parseSystemColor

Source/core/html/canvas/CanvasStyle.h

 /*
  * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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 18 matching lines @@
 
 #include "platform/graphics/Color.h"
 #include "wtf/Assertions.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
     class CanvasGradient;
     class CanvasPattern;
-    class Document;
     class GraphicsContext;
     class HTMLCanvasElement;
 
     class CanvasStyle : public RefCounted<CanvasStyle> {
     public:
         static PassRefPtr<CanvasStyle> createFromRGBA(RGBA32 rgba) { return adoptRef(new CanvasStyle(rgba)); }
-        static PassRefPtr<CanvasStyle> createFromString(const String& color, Document* = 0);
+        static PassRefPtr<CanvasStyle> createFromString(const String& color);
         static PassRefPtr<CanvasStyle> createFromStringWithOverrideAlpha(const String& color, float alpha);
         static PassRefPtr<CanvasStyle> createFromGrayLevelWithAlpha(float grayLevel, float alpha) { return adoptRef(new CanvasStyle(grayLevel, alpha)); }
         static PassRefPtr<CanvasStyle> createFromRGBAChannels(float r, float g, float b, float a) { return adoptRef(new CanvasStyle(r, g, b, a)); }
         static PassRefPtr<CanvasStyle> createFromCMYKAChannels(float c, float m, float y, float k, float a) { return adoptRef(new CanvasStyle(c, m, y, k, a)); }
         static PassRefPtr<CanvasStyle> createFromGradient(PassRefPtr<CanvasGradient>);
         static PassRefPtr<CanvasStyle> createFromPattern(PassRefPtr<CanvasPattern>);
 
         bool isCurrentColor() const { return m_type == CurrentColor || m_type == CurrentColorWithOverrideAlpha; }
         bool hasOverrideAlpha() const { return m_type == CurrentColorWithOverrideAlpha; }
         float overrideAlpha() const { ASSERT(m_type == CurrentColorWithOverrideAlpha); return m_overrideAlpha; }
@@ skipping 40 matching lines @@
             float a;
         } m_cmyka;
     };
 
     RGBA32 currentColor(HTMLCanvasElement*);
     bool parseColorOrCurrentColor(RGBA32& parsedColor, const String& colorString, HTMLCanvasElement*);
 
 } // namespace WebCore
 
 #endif