SP: Use a high-quality image filter regardless of CTM.

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 @@
 {
     return fabs(value - floorf(value)) < std::numeric_limits<float>::epsilon();
 }
 
 InterpolationQuality limitInterpolationQuality(const GraphicsContext* context, InterpolationQuality resampling)
 {
     return std::min(resampling, context->imageInterpolationQuality());
 }
 
 InterpolationQuality computeInterpolationQuality(
-    const SkMatrix& matrix,
     float srcWidth,
     float srcHeight,
     float destWidth,
     float destHeight,
     bool isDataComplete)
 {
     // The percent change below which we will not resample. This usually means
     // an off-by-one error on the web page, and just doing nearest neighbor
     // sampling is usually good enough.
     const float kFractionalChangeThreshold = 0.025f;
@@ skipping 58 matching lines @@
         // is a small fraction of the original size.
         return InterpolationNone;
     }
 
     // When the image is not yet done loading, use linear. We don't cache the
     // partially resampled images, and as they come in incrementally, it causes
     // us to have to resample the whole thing every time.
     if (!isDataComplete)
         return InterpolationLow;
 
-    // Everything else gets resampled.
-    // High quality interpolation only enabled for scaling and translation.
-    if (!(matrix.getType() & (SkMatrix::kAffine_Mask | SkMatrix::kPerspective_Mask)))
-        return InterpolationHigh;
-
-    return InterpolationLow;
+    // Everything else gets resampled at high quality.
+    return InterpolationHigh;
 }
 
 int clampedAlphaForBlending(float alpha)
 {
     if (alpha < 0)
         return 0;
     int roundedAlpha = roundf(alpha * 256);
     if (roundedAlpha > 256)
         roundedAlpha = 256;
     return roundedAlpha;
@@ skipping 56 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