Update from https://crrev.com/306655

skia/ext/image_operations.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.
 
 #define _USE_MATH_DEFINES
 #include <algorithm>
 #include <cmath>
 #include <limits>
 
 #include "skia/ext/image_operations.h"
@@ skipping 324 matching lines @@
 }  // namespace
 
 // Resize ----------------------------------------------------------------------
 
 // static
 SkBitmap ImageOperations::Resize(const SkBitmap& source,
                                  ResizeMethod method,
                                  int dest_width, int dest_height,
                                  const SkIRect& dest_subset,
                                  SkBitmap::Allocator* allocator) {
-  if (method == ImageOperations::RESIZE_SUBPIXEL) {
-    return ResizeSubpixel(source, dest_width, dest_height,
-                          dest_subset, allocator);
-  } else {
-    return ResizeBasic(source, method, dest_width, dest_height, dest_subset,
-                       allocator);
-  }
-}
-
-// static
-SkBitmap ImageOperations::ResizeSubpixel(const SkBitmap& source,
-                                         int dest_width, int dest_height,
-                                         const SkIRect& dest_subset,
-                                         SkBitmap::Allocator* allocator) {
-  TRACE_EVENT2("skia", "ImageOperations::ResizeSubpixel",
-               "src_pixels", source.width()*source.height(),
-               "dst_pixels", dest_width*dest_height);
-  // Currently only works on Linux/BSD because these are the only platforms
-  // where SkFontHost::GetSubpixelOrder is defined.
-#if defined(OS_LINUX) && !defined(GTV)
-  // Understand the display.
-  const SkFontHost::LCDOrder order = SkFontHost::GetSubpixelOrder();
-  const SkFontHost::LCDOrientation orientation =
-      SkFontHost::GetSubpixelOrientation();
-
-  // Decide on which dimension, if any, to deploy subpixel rendering.
-  int w = 1;
-  int h = 1;
-  switch (orientation) {
-    case SkFontHost::kHorizontal_LCDOrientation:
-      w = dest_width < source.width() ? 3 : 1;
-      break;
-    case SkFontHost::kVertical_LCDOrientation:
-      h = dest_height < source.height() ? 3 : 1;
-      break;
-  }
-
-  // Resize the image.
-  const int width = dest_width * w;
-  const int height = dest_height * h;
-  SkIRect subset = { dest_subset.fLeft, dest_subset.fTop,
-                     dest_subset.fLeft + dest_subset.width() * w,
-                     dest_subset.fTop + dest_subset.height() * h };
-  SkBitmap img = ResizeBasic(source, ImageOperations::RESIZE_LANCZOS3, width,
-                             height, subset, allocator);
-  const int row_words = img.rowBytes() / 4;
-  if (w == 1 && h == 1)
-    return img;
-
-  // Render into subpixels.
-  SkBitmap result;
-  result.setInfo(SkImageInfo::MakeN32(dest_subset.width(), dest_subset.height(),
-                                      img.alphaType()));
-  result.allocPixels(allocator, NULL);
-  if (!result.readyToDraw())
-    return img;
-
-  SkAutoLockPixels locker(img);
-  if (!img.readyToDraw())
-    return img;
-
-  uint32* src_row = img.getAddr32(0, 0);
-  uint32* dst_row = result.getAddr32(0, 0);
-  for (int y = 0; y < dest_subset.height(); y++) {
-    uint32* src = src_row;
-    uint32* dst = dst_row;
-    for (int x = 0; x < dest_subset.width(); x++, src += w, dst++) {
-      uint8 r = 0, g = 0, b = 0, a = 0;
-      switch (order) {
-        case SkFontHost::kRGB_LCDOrder:
-          switch (orientation) {
-            case SkFontHost::kHorizontal_LCDOrientation:
-              r = SkGetPackedR32(src[0]);
-              g = SkGetPackedG32(src[1]);
-              b = SkGetPackedB32(src[2]);
-              a = SkGetPackedA32(src[1]);
-              break;
-            case SkFontHost::kVertical_LCDOrientation:
-              r = SkGetPackedR32(src[0 * row_words]);
-              g = SkGetPackedG32(src[1 * row_words]);
-              b = SkGetPackedB32(src[2 * row_words]);
-              a = SkGetPackedA32(src[1 * row_words]);
-              break;
-          }
-          break;
-        case SkFontHost::kBGR_LCDOrder:
-          switch (orientation) {
-            case SkFontHost::kHorizontal_LCDOrientation:
-              b = SkGetPackedB32(src[0]);
-              g = SkGetPackedG32(src[1]);
-              r = SkGetPackedR32(src[2]);
-              a = SkGetPackedA32(src[1]);
-              break;
-            case SkFontHost::kVertical_LCDOrientation:
-              b = SkGetPackedB32(src[0 * row_words]);
-              g = SkGetPackedG32(src[1 * row_words]);
-              r = SkGetPackedR32(src[2 * row_words]);
-              a = SkGetPackedA32(src[1 * row_words]);
-              break;
-          }
-          break;
-        case SkFontHost::kNONE_LCDOrder:
-          NOTREACHED();
-      }
-      // Premultiplied alpha is very fragile.
-      a = a > r ? a : r;
-      a = a > g ? a : g;
-      a = a > b ? a : b;
-      *dst = SkPackARGB32(a, r, g, b);
-    }
-    src_row += h * row_words;
-    dst_row += result.rowBytes() / 4;
-  }
-  return result;
-#else
-  return SkBitmap();
-#endif  // OS_POSIX && !OS_MACOSX && !defined(OS_ANDROID)
-}
-
-// static
-SkBitmap ImageOperations::ResizeBasic(const SkBitmap& source,
-                                      ResizeMethod method,
-                                      int dest_width, int dest_height,
-                                      const SkIRect& dest_subset,
-                                      SkBitmap::Allocator* allocator) {
-  TRACE_EVENT2("skia", "ImageOperations::ResizeBasic",
-               "src_pixels", source.width()*source.height(),
-               "dst_pixels", dest_width*dest_height);
+  TRACE_EVENT2("disabled-by-default-skia", "ImageOperations::Resize",
+               "src_pixels", source.width() * source.height(), "dst_pixels",
+               dest_width * dest_height);
   // Ensure that the ResizeMethod enumeration is sound.
   SkASSERT(((RESIZE_FIRST_QUALITY_METHOD <= method) &&
             (method <= RESIZE_LAST_QUALITY_METHOD)) ||
            ((RESIZE_FIRST_ALGORITHM_METHOD <= method) &&
             (method <= RESIZE_LAST_ALGORITHM_METHOD)));
 
   // Time how long this takes to see if it's a problem for users.
   base::TimeTicks resize_start = base::TimeTicks::Now();
 
   SkIRect dest = { 0, 0, dest_width, dest_height };
@@ skipping 47 matching lines @@
 SkBitmap ImageOperations::Resize(const SkBitmap& source,
                                  ResizeMethod method,
                                  int dest_width, int dest_height,
                                  SkBitmap::Allocator* allocator) {
   SkIRect dest_subset = { 0, 0, dest_width, dest_height };
   return Resize(source, method, dest_width, dest_height, dest_subset,
                 allocator);
 }
 
 }  // namespace skia