SkBitmap and SkPixelRef no longer need lock/unlock

content/browser/devtools/devtools_frame_trace_recorder.cc

 // Copyright (c) 2015 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/devtools/devtools_frame_trace_recorder.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <vector>
@@ skipping 22 matching lines @@
 
 class TraceableDevToolsScreenshot
     : public base::trace_event::ConvertableToTraceFormat {
  public:
   TraceableDevToolsScreenshot(const SkBitmap& bitmap) : frame_(bitmap) {}
 
   void AppendAsTraceFormat(std::string* out) const override {
     out->append("\"");
     if (!frame_.drawsNothing()) {
       std::vector<unsigned char> data;
-      SkAutoLockPixels lock_image(frame_);
       bool encoded = gfx::JPEGCodec::Encode(
           reinterpret_cast<unsigned char*>(frame_.getAddr32(0, 0)),
           gfx::JPEGCodec::FORMAT_SkBitmap,
           frame_.width(), frame_.height(),
           frame_.width() * frame_.bytesPerPixel(), 80, &data);
       if (encoded) {
         std::string encoded_data;
         base::Base64Encode(
             base::StringPiece(reinterpret_cast<char*>(&data[0]), data.size()),
             &encoded_data);
@@ skipping 85 matching lines @@
 
   bool is_new_trace;
   TRACE_EVENT_IS_NEW_TRACE(&is_new_trace);
   if (!is_new_trace && last_metadata_)
     CaptureFrame(host, *last_metadata_);
   last_metadata_.reset(new cc::CompositorFrameMetadata);
   *last_metadata_ = frame_metadata.Clone();
 }
 
 }  // namespace content