SkBitmap and SkPixelRef no longer need lock/unlock

cc/layers/scrollbar_layer_unittest.cc

 // Copyright 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 <stddef.h>
 
 #include <unordered_map>
 
 #include "base/memory/ptr_util.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ skipping 1177 matching lines @@
     gfx::Rect screen_space_clip_rect;
     scrollbar_layer->SavePaintProperties();
 
     scrollbar_layer->Update();
 
     UIResourceBitmap* bitmap = fake_ui_resource_manager_->ui_resource_bitmap(
         scrollbar_layer->track_resource_id());
 
     DCHECK(bitmap);
 
-    AutoLockUIResourceBitmap locked_bitmap(*bitmap);
-
     const SkColor* pixels =
-        reinterpret_cast<const SkColor*>(locked_bitmap.GetPixels());
+        reinterpret_cast<const SkColor*>(bitmap->GetPixels());
     SkColor color = argb_to_skia(
         scrollbar_layer->fake_scrollbar()->paint_fill_color());
     int width = bitmap->GetSize().width();
     int height = bitmap->GetSize().height();
 
     // Make sure none of the corners of the bitmap were inadvertently clipped.
     EXPECT_EQ(color, pixels[0])
         << "Top left pixel doesn't match scrollbar color.";
 
     EXPECT_EQ(color, pixels[width - 1])
@@ skipping 23 matching lines @@
   TestScale(gfx::Rect(1240, 0, 15, 1333), 2.7754839f);
   TestScale(gfx::Rect(1240, 0, 15, 677), 2.46677136f);
 
   // Horizontal Scrollbars.
   TestScale(gfx::Rect(0, 1240, 1333, 15), 2.7754839f);
   TestScale(gfx::Rect(0, 1240, 677, 15), 2.46677136f);
 }
 
 }  // namespace
 }  // namespace cc