Remove unused includes from core/platform .cpp files

Source/core/platform/graphics/harfbuzz/FontHarfBuzz.cpp

 /*
  * Copyright (c) 2007, 2008, 2010 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:
  * 
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 20 matching lines @@
 #include "config.h"
 #include "core/platform/graphics/Font.h"
 
 #include "core/platform/NotImplemented.h"
 #include "core/platform/graphics/FloatRect.h"
 #include "core/platform/graphics/GlyphBuffer.h"
 #include "core/platform/graphics/GraphicsContext.h"
 #include "core/platform/graphics/SimpleFontData.h"
 #include "core/platform/graphics/harfbuzz/HarfBuzzShaper.h"
 
-#include "SkCanvas.h"
 #include "SkPaint.h"
 #include "SkTemplates.h"
-#include "SkTypeface.h"
-#include "SkUtils.h"
 
 #include <wtf/unicode/Unicode.h>
 
 namespace WebCore {
 
 bool Font::canReturnFallbackFontsForComplexText()
 {
     return false;
 }
 
@@ skipping 154 matching lines @@
                                             const FloatPoint& point, int height,
                                             int from, int to) const
 {
     HarfBuzzShaper shaper(this, run);
     if (!shaper.shape())
         return FloatRect();
     return shaper.selectionRect(point, height, from, to);
 }
 
 } // namespace WebCore