SkBitmap and SkPixelRef no longer need lock/unlock

content/shell/renderer/layout_test/blink_test_runner.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.
 
 #include "content/shell/renderer/layout_test/blink_test_runner.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <clocale>
@@ skipping 919 matching lines @@
     return;
   }
 
   CaptureDumpComplete();
 }
 
 void BlinkTestRunner::OnPixelsDumpCompleted(const SkBitmap& snapshot) {
   DCHECK_NE(0, snapshot.info().width());
   DCHECK_NE(0, snapshot.info().height());
 
-  SkAutoLockPixels snapshot_lock(snapshot);
   // The snapshot arrives from the GPU process via shared memory. Because MSan
   // can't track initializedness across processes, we must assure it that the
   // pixels are in fact initialized.
   MSAN_UNPOISON(snapshot.getPixels(), snapshot.getSize());
   base::MD5Digest digest;
   base::MD5Sum(snapshot.getPixels(), snapshot.getSize(), &digest);
   std::string actual_pixel_hash = base::MD5DigestToBase16(digest);
 
   if (actual_pixel_hash == test_config_->expected_pixel_hash) {
     SkBitmap empty_image;
@@ skipping 107 matching lines @@
 void BlinkTestRunner::ReportLeakDetectionResult(
     const LeakDetectionResult& report) {
   Send(new ShellViewHostMsg_LeakDetectionDone(routing_id(), report));
 }
 
 void BlinkTestRunner::OnDestruct() {
   delete this;
 }
 
 }  // namespace content