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

cc/layers/video_layer_impl.cc

 // Copyright 2011 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/layers/video_layer_impl.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "cc/layers/video_frame_provider_client_impl.h"
 #include "cc/quads/io_surface_draw_quad.h"
@@ skipping 23 matching lines @@
       new VideoLayerImpl(tree_impl, id, video_rotation));
   layer->SetProviderClientImpl(VideoFrameProviderClientImpl::Create(provider));
   DCHECK(tree_impl->proxy()->IsImplThread());
   DCHECK(tree_impl->proxy()->IsMainThreadBlocked());
   return layer.Pass();
 }
 
 VideoLayerImpl::VideoLayerImpl(LayerTreeImpl* tree_impl,
                                int id,
                                media::VideoRotation video_rotation)
-    : LayerImpl(tree_impl, id), frame_(NULL), video_rotation_(video_rotation) {
+    : LayerImpl(tree_impl, id),
+      frame_(nullptr),
+      video_rotation_(video_rotation) {
 }
 
 VideoLayerImpl::~VideoLayerImpl() {
   if (!provider_client_impl_->Stopped()) {
     // In impl side painting, we may have a pending and active layer
     // associated with the video provider at the same time. Both have a ref
     // on the VideoFrameProviderClientImpl, but we stop when the first
     // LayerImpl (the one on the pending tree) is destroyed since we know
     // the main thread is blocked for this commit.
     DCHECK(layer_tree_impl()->proxy()->IsImplThread());
@@ skipping 289 matching lines @@
 
     software_resources_.clear();
     software_release_callback_.Reset();
   } else {
     for (size_t i = 0; i < frame_resources_.size(); ++i)
       resource_provider->DeleteResource(frame_resources_[i]);
     frame_resources_.clear();
   }
 
   provider_client_impl_->PutCurrentFrame(frame_);
-  frame_ = NULL;
+  frame_ = nullptr;
 
   provider_client_impl_->ReleaseLock();
 }
 
 void VideoLayerImpl::ReleaseResources() {
   updater_ = nullptr;
 }
 
 void VideoLayerImpl::SetNeedsRedraw() {
   SetUpdateRect(gfx::UnionRects(update_rect(), gfx::RectF(bounds())));
   layer_tree_impl()->SetNeedsRedraw();
 }
 
 void VideoLayerImpl::SetProviderClientImpl(
     scoped_refptr<VideoFrameProviderClientImpl> provider_client_impl) {
   provider_client_impl_ = provider_client_impl;
 }
 
 const char* VideoLayerImpl::LayerTypeAsString() const {
   return "cc::VideoLayerImpl";
 }
 
 }  // namespace cc