Use refs for GraphicsContext

third_party/WebKit/Source/platform/graphics/skia/SkiaUtils.cpp

 /*
  * 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 225 matching lines @@
     result.set(SkMatrix::kMPersp2, SK_Scalar1);
 
     return result;
 }
 
 bool nearlyIntegral(float value)
 {
     return fabs(value - floorf(value)) < std::numeric_limits<float>::epsilon();
 }
 
-InterpolationQuality limitInterpolationQuality(const GraphicsContext* context, InterpolationQuality resampling)
+InterpolationQuality limitInterpolationQuality(const GraphicsContext& context, InterpolationQuality resampling)
 {
-    return std::min(resampling, context->imageInterpolationQuality());
+    return std::min(resampling, context.imageInterpolationQuality());
 }
 
 InterpolationQuality computeInterpolationQuality(
     float srcWidth,
     float srcHeight,
     float destWidth,
     float destHeight,
     bool isDataComplete)
 {
     // The percent change below which we will not resample. This usually means
@@ skipping 138 matching lines @@
     paint.setAlpha(128);
     paint.setStrokeWidth(paint.getStrokeWidth() * 0.5f);
     drawFocusRingPrimitive(primitive, canvas, paint, cornerRadius);
 #endif
 }
 
 template void PLATFORM_EXPORT drawPlatformFocusRing<SkRect>(const SkRect&, SkCanvas*, SkColor, int width);
 template void PLATFORM_EXPORT drawPlatformFocusRing<SkPath>(const SkPath&, SkCanvas*, SkColor, int width);
 
 }  // namespace blink