SkBitmap and SkPixelRef no longer need lock/unlock

content/browser/renderer_host/delegated_frame_host.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 "content/browser/renderer_host/delegated_frame_host.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 600 matching lines @@
     if (result->size() != region_in_frame.size()) {
       skia::ImageOperations::ResizeMethod method =
           skia::ImageOperations::RESIZE_GOOD;
       scaled_bitmap = skia::ImageOperations::Resize(*bitmap.get(), method,
                                                     region_in_frame.width(),
                                                     region_in_frame.height());
     } else {
       scaled_bitmap = *bitmap.get();
     }
 
-    {
-      SkAutoLockPixels scaled_bitmap_locker(scaled_bitmap);
+    media::CopyRGBToVideoFrame(
+        reinterpret_cast<uint8_t*>(scaled_bitmap.getPixels()),
+        scaled_bitmap.rowBytes(), region_in_frame, video_frame.get());
 
-      media::CopyRGBToVideoFrame(
-          reinterpret_cast<uint8_t*>(scaled_bitmap.getPixels()),
-          scaled_bitmap.rowBytes(), region_in_frame, video_frame.get());
-    }
     ignore_result(scoped_callback_runner.Release());
     callback.Run(region_in_frame, true);
     return;
   }
 
   ImageTransportFactory* factory = ImageTransportFactory::GetInstance();
   display_compositor::GLHelper* gl_helper = factory->GetGLHelper();
   if (!gl_helper)
     return;
   if (subscriber_texture.get() && !subscriber_texture->texture_id())
@@ skipping 227 matching lines @@
   }
 
   if (!skipped_frames_) {
     latest_confirmed_begin_frame_source_id_ = ack.source_id;
     latest_confirmed_begin_frame_sequence_number_ =
         ack.latest_confirmed_sequence_number;
   }
 }
 
 }  // namespace content