Update from https://crrev.com/306655

skia/ext/image_operations_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <algorithm>
 #include <cmath>
 #include <iomanip>
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 477 matching lines @@
   const int src_w = 640, src_h = 480, checker_rect_w = 4, checker_rect_h = 8;
   const SkColor checker_color1 = SK_ColorRED, checker_color2 = SK_ColorBLUE;
 
   const int dest_w = src_w / (4 * checker_rect_w);
   const int dest_h = src_h / (2 * checker_rect_h);
 
   // Compute the expected (average) color
   const SkColor colors[] = { checker_color1, checker_color2 };
   const SkColor average_color = AveragePixel(colors, arraysize(colors));
 
-  // RESIZE_SUBPIXEL is only supported on Linux/non-GTV platforms.
   static const TestedResizeMethod tested_methods[] = {
     { skia::ImageOperations::RESIZE_GOOD,     "GOOD",     0.0f },
     { skia::ImageOperations::RESIZE_BETTER,   "BETTER",   0.0f },
     { skia::ImageOperations::RESIZE_BEST,     "BEST",     0.0f },
     { skia::ImageOperations::RESIZE_BOX,      "BOX",      0.0f },
     { skia::ImageOperations::RESIZE_HAMMING1, "HAMMING1", 0.0f },
     { skia::ImageOperations::RESIZE_LANCZOS2, "LANCZOS2", 0.0f },
     { skia::ImageOperations::RESIZE_LANCZOS3, "LANCZOS3", 0.0f },
-#if defined(OS_LINUX) && !defined(GTV)
-    // SUBPIXEL has slightly worse performance than the other filters:
-    //   6.324  Bottom left/right corners
-    //   5.099  Top left/right corners
-    //   2.828  Bottom middle
-    //   1.414  Top/Left/Right middle, center
-    //
-    // This is expected since, in order to judge RESIZE_SUBPIXEL accurately,
-    // we'd need to compute distances for each sub-pixel, and potentially
-    // tweak the test parameters so that expectations were realistic when
-    // looking at sub-pixels in isolation.
-    //
-    // Rather than going to these lengths, we added the "max_distance_override"
-    // field in TestedResizeMethod, intended for RESIZE_SUBPIXEL. It allows
-    // us to to enable its testing without having to lower the success criteria
-    // for the other methods. This procedure is  distateful but defining
-    // a distance limit for each tested pixel for each method was judged to add
-    // unneeded complexity.
-    { skia::ImageOperations::RESIZE_SUBPIXEL, "SUBPIXEL", 6.4f },
-#endif
   };
 
   // Create our source bitmap.
   SkBitmap src;
   DrawCheckerToBitmap(src_w, src_h,
                       checker_color1, checker_color2,
                       checker_rect_w, checker_rect_h,
                       &src);
 
   // For each method, downscale by 16 in each dimension,
@@ skipping 180 matching lines @@
       EXPECT_LE(fabs(SkColorGetA(dst_color) - a), 1.5f);
       EXPECT_LE(fabs(SkColorGetR(dst_color) - r), 1.5f);
       EXPECT_LE(fabs(SkColorGetG(dst_color) - g), 1.5f);
       EXPECT_LE(fabs(SkColorGetB(dst_color) - b), 1.5f);
       if (HasFailure()) {
         return;
       }
     }
   }
 }