SkBitmap and SkPixelRef no longer need lock/unlock

ui/gfx/ipc/skia/gfx_skia_param_traits.cc

 // Copyright 2016 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 "ui/gfx/ipc/skia/gfx_skia_param_traits.h"
 
 #include <string>
 
 #include "base/pickle.h"
 #include "third_party/skia/include/core/SkBitmap.h"
@@ skipping 46 matching lines @@
   s->AddData(static_cast<int>(p.getSize()));
 }
 
 void ParamTraits<SkBitmap>::Write(base::Pickle* m, const SkBitmap& p) {
   size_t fixed_size = sizeof(SkBitmap_Data);
   SkBitmap_Data bmp_data;
   bmp_data.InitSkBitmapDataForTransfer(p);
   m->WriteData(reinterpret_cast<const char*>(&bmp_data),
                static_cast<int>(fixed_size));
   size_t pixel_size = p.getSize();
-  SkAutoLockPixels p_lock(p);
   m->WriteData(reinterpret_cast<const char*>(p.getPixels()),
                static_cast<int>(pixel_size));
 }
 
 bool ParamTraits<SkBitmap>::Read(const base::Pickle* m,
                                  base::PickleIterator* iter,
                                  SkBitmap* r) {
   const char* fixed_data;
   int fixed_data_size = 0;
   if (!iter->ReadData(&fixed_data, &fixed_data_size) ||
@@ skipping 58 matching lines @@
   l->append("(");
   for (int i = 0; i < 16; ++i) {
     if (i > 0)
       l->append(", ");
     LogParam(row_major_data[i], l);
   }
   l->append(") ");
 }
 
 }  // namespace IPC