Use SkJpegEncoder in gfx jpeg_codec

chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager_test_utils.cc

 // Copyright 2014 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 "chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager_test_utils.h"
 
 #include <stddef.h>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 69 matching lines @@
 const int kWallpaperSize = 2;
 
 bool CreateJPEGImage(int width,
                      int height,
                      SkColor color,
                      std::vector<unsigned char>* output) {
   SkBitmap bitmap;
   bitmap.allocN32Pixels(width, height);
   bitmap.eraseColor(color);
 
-  const int kQuality = 80;
-  if (!gfx::JPEGCodec::Encode(
-          static_cast<const unsigned char*>(bitmap.getPixels()),
-          gfx::JPEGCodec::FORMAT_SkBitmap,
-          width,
-          height,
-          bitmap.rowBytes(),
-          kQuality,
-          output)) {
+  constexpr int kQuality = 80;
+  if (!gfx::JPEGCodec::Encode(bitmap, kQuality, output)) {
     LOG(ERROR) << "Unable to encode " << width << "x" << height << " bitmap";
     return false;
   }
   return true;
 }
 
 gfx::ImageSkia CreateTestImage(int width, int height, SkColor color) {
   SkBitmap bitmap;
   bitmap.allocN32Pixels(width, height);
   bitmap.eraseColor(color);
@@ skipping 116 matching lines @@
                             kWallpaperSize,
                             kLargeChildWallpaperColor));
 
   command_line->reset(new base::CommandLine(options));
   WallpaperManager::Get()->SetCommandLineForTesting(command_line->get());
 }
 
 }  // namespace wallpaper_manager_test_utils
 
 }  // namespace chromeos