SkBitmap and SkPixelRef no longer need lock/unlock

components/user_manager/user_image/user_image.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 "components/user_manager/user_image/user_image.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/trace_event/trace_event.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/codec/jpeg_codec.h"
 #include "ui/gfx/codec/png_codec.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace user_manager {
 
 namespace {
 
 // Default quality for encoding user images.
 const int kDefaultEncodingQuality = 90;
 
 }  // namespace
 
 // static
 scoped_refptr<base::RefCountedBytes> UserImage::Encode(
     const SkBitmap& bitmap,
     ImageFormat image_format) {
   TRACE_EVENT2("oobe", "UserImage::Encode",
                "width", bitmap.width(), "height", bitmap.height());
-  SkAutoLockPixels lock_bitmap(bitmap);
   std::vector<unsigned char> output;
   auto* bitmap_data = reinterpret_cast<unsigned char*>(bitmap.getAddr32(0, 0));
   if (image_format == FORMAT_JPEG) {
     if (gfx::JPEGCodec::Encode(
             bitmap_data,
             gfx::JPEGCodec::FORMAT_SkBitmap,
             bitmap.width(),
             bitmap.height(),
             bitmap.width() * bitmap.bytesPerPixel(),
             kDefaultEncodingQuality, &output)) {
@@ skipping 53 matching lines @@
       image_format_(image_format) {
 }
 
 UserImage::~UserImage() {}
 
 void UserImage::MarkAsSafe() {
   is_safe_format_ = true;
 }
 
 }  // namespace user_manager