[TextBlob] Fix LCD text handling.

Source/platform/graphics/GraphicsContext.h

 /*
  * Copyright (C) 2003, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2008-2009 Torch Mobile, Inc.
  * Copyright (C) 2013 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.
@@ skipping 150 matching lines @@
 
     void setShouldClampToSourceRect(bool clampToSourceRect) { mutableState()->setShouldClampToSourceRect(clampToSourceRect); }
     bool shouldClampToSourceRect() const { return immutableState()->shouldClampToSourceRect(); }
 
     // FIXME: the setter is only used once, at construction time; convert to a constructor param,
     // and possibly consolidate with other flags (paintDisabled, isPrinting, ...)
     void setShouldSmoothFonts(bool smoothFonts) { m_shouldSmoothFonts = smoothFonts; }
     bool shouldSmoothFonts() const { return m_shouldSmoothFonts; }
 
     // Turn off LCD text for the paint if not supported on this context.
-    void adjustTextRenderMode(SkPaint*);
-    bool couldUseLCDRenderedText();
+    void adjustTextRenderMode(SkPaint*) const;
+    bool couldUseLCDRenderedText() const;
 
     void setTextDrawingMode(TextDrawingModeFlags mode) { mutableState()->setTextDrawingMode(mode); }
     TextDrawingModeFlags textDrawingMode() const { return immutableState()->textDrawingMode(); }
 
     void setAlphaAsFloat(float alpha) { mutableState()->setAlphaAsFloat(alpha);}
     int getNormalizedAlpha() const
     {
         int alpha = immutableState()->alpha();
         return alpha > 255 ? 255 : alpha;
     }
@@ skipping 353 matching lines @@
     bool m_accelerated : 1;
     bool m_isCertainlyOpaque : 1;
     bool m_printing : 1;
     bool m_antialiasHairlineImages : 1;
     bool m_shouldSmoothFonts : 1;
 };
 
 } // namespace blink
 
 #endif // GraphicsContext_h