Make CanvasRenderingContext2D use SkCanvas directly

Source/platform/graphics/skia/SkiaUtils.h

 /*
  * Copyright (c) 2006,2007,2008, 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 79 matching lines @@
 inline bool WebCoreFloatNearlyEqual(float a, float b)
 {
     return SkScalarNearlyEqual(WebCoreFloatToSkScalar(a), WebCoreFloatToSkScalar(b));
 }
 
 inline SkPath::FillType WebCoreWindRuleToSkFillType(WindRule rule)
 {
     return static_cast<SkPath::FillType>(rule);
 }
 
+inline WindRule SkFillTypeToWindRule(SkPath::FillType fillType)
+{
+    switch (fillType) {
+    case SkPath::kWinding_FillType:
+    case SkPath::kEvenOdd_FillType:
+        return static_cast<WindRule>(fillType);
+    default:
+        ASSERT_NOT_REACHED();
+        break;
+    }
+    return RULE_NONZERO;
+}
+
 // Determine if a given WebKit point is contained in a path
 bool SkPathContainsPoint(const SkPath&, const FloatPoint&, SkPath::FillType);
 
-SkMatrix affineTransformToSkMatrix(const AffineTransform&);
+SkMatrix PLATFORM_EXPORT affineTransformToSkMatrix(const AffineTransform&);
 
 bool nearlyIntegral(float value);
 
 InterpolationQuality limitInterpolationQuality(const GraphicsContext*, InterpolationQuality resampling);
 
 InterpolationQuality computeInterpolationQuality(
     const SkMatrix&,
     float srcWidth,
     float srcHeight,
     float destWidth,
     float destHeight,
     bool isDataComplete = true);
 
 bool shouldDrawAntiAliased(const GraphicsContext*, const SkRect& destRect);
 
 } // namespace blink
 
 #endif  // SkiaUtils_h