[C++11 Allowed Features] Declares a type-safe null pointer converting from NULL to nullptr in src/…

cc/resources/zero_copy_raster_worker_pool.cc

 // Copyright 2013 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 "cc/resources/zero_copy_raster_worker_pool.h"
 
 #include <algorithm>
 
 #include "base/debug/trace_event.h"
 #include "base/debug/trace_event_argument.h"
 #include "base/strings/stringprintf.h"
 #include "cc/debug/traced_value.h"
 #include "cc/resources/raster_buffer.h"
 #include "cc/resources/resource.h"
 #include "third_party/skia/include/utils/SkNullCanvas.h"
 
 namespace cc {
 namespace {
 
 class RasterBufferImpl : public RasterBuffer {
  public:
   RasterBufferImpl(ResourceProvider* resource_provider,
                    const Resource* resource)
       : lock_(resource_provider, resource->id()),
         resource_(resource),
-        buffer_(NULL) {}
+        buffer_(nullptr) {}
 
   // Overridden from RasterBuffer:
   virtual skia::RefPtr<SkCanvas> AcquireSkCanvas() override {
     buffer_ = lock_.gpu_memory_buffer();
     if (!buffer_)
       return skia::AdoptRef(SkCreateNullCanvas());
 
     RasterWorkerPool::AcquireBitmapForBuffer(&bitmap_,
                                              buffer_,
                                              resource_->format(),
@@ skipping 176 matching lines @@
       new base::debug::TracedValue();
 
   state->BeginArray("tasks_pending");
   for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set)
     state->AppendBoolean(raster_pending_[task_set]);
   state->EndArray();
   return state;
 }
 
 }  // namespace cc