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

cc/resources/picture_layer_tiling_set.cc

 // Copyright 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 "cc/resources/picture_layer_tiling_set.h"
 
 #include <limits>
 
 namespace cc {
 
@@ skipping 112 matching lines @@
       num_high_res++;
   }
   return num_high_res;
 }
 
 PictureLayerTiling* PictureLayerTilingSet::TilingAtScale(float scale) const {
   for (size_t i = 0; i < tilings_.size(); ++i) {
     if (tilings_[i]->contents_scale() == scale)
       return tilings_[i];
   }
-  return NULL;
+  return nullptr;
 }
 
 void PictureLayerTilingSet::RemoveAllTilings() {
   tilings_.clear();
 }
 
 void PictureLayerTilingSet::Remove(PictureLayerTiling* tiling) {
   ScopedPtrVector<PictureLayerTiling>::iterator iter =
     std::find(tilings_.begin(), tilings_.end(), tiling);
   if (iter == tilings_.end())
@@ skipping 57 matching lines @@
 }
 
 gfx::Size PictureLayerTilingSet::CoverageIterator::texture_size() const {
   if (!tiling_iter_)
     return gfx::Size();
   return tiling_iter_.texture_size();
 }
 
 Tile* PictureLayerTilingSet::CoverageIterator::operator->() const {
   if (!tiling_iter_)
-    return NULL;
+    return nullptr;
   return *tiling_iter_;
 }
 
 Tile* PictureLayerTilingSet::CoverageIterator::operator*() const {
   if (!tiling_iter_)
-    return NULL;
+    return nullptr;
   return *tiling_iter_;
 }
 
 TileResolution PictureLayerTilingSet::CoverageIterator::resolution() const {
   const PictureLayerTiling* tiling = CurrentTiling();
   DCHECK(tiling);
   return tiling->resolution();
 }
 
 PictureLayerTiling* PictureLayerTilingSet::CoverageIterator::CurrentTiling()
     const {
   if (current_tiling_ < 0)
-    return NULL;
+    return nullptr;
   if (static_cast<size_t>(current_tiling_) >= set_->tilings_.size())
-    return NULL;
+    return nullptr;
   return set_->tilings_[current_tiling_];
 }
 
 int PictureLayerTilingSet::CoverageIterator::NextTiling() const {
   // Order returned by this method is:
   // 1. Ideal tiling index
   // 2. Tiling index < Ideal in decreasing order (higher res than ideal)
   // 3. Tiling index > Ideal in increasing order (lower res than ideal)
   // 4. Tiling index > tilings.size() (invalid index)
   if (current_tiling_ < 0)
@@ skipping 112 matching lines @@
       return low_res_range;
     case LOWER_THAN_LOW_RES:
       return TilingRange(low_res_range.end, tilings_.size());
   }
 
   NOTREACHED();
   return TilingRange(0, 0);
 }
 
 }  // namespace cc