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

cc/resources/tile_manager.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/tile_manager.h"
 
 #include <algorithm>
 #include <limits>
 #include <string>
 
@@ skipping 107 matching lines @@
     DCHECK(canvas);
 
     base::TimeDelta prev_rasterize_time =
         rendering_stats_->impl_thread_rendering_stats().rasterize_time;
 
     // Only record rasterization time for highres tiles, because
     // lowres tiles are not required for activation and therefore
     // introduce noise in the measurement (sometimes they get rasterized
     // before we draw and sometimes they aren't)
     RenderingStatsInstrumentation* stats =
-        tile_resolution_ == HIGH_RESOLUTION ? rendering_stats_ : NULL;
+        tile_resolution_ == HIGH_RESOLUTION ? rendering_stats_ : nullptr;
     DCHECK(picture_pile);
     picture_pile->RasterToBitmap(
         canvas.get(), content_rect_, contents_scale_, stats);
 
     if (rendering_stats_->record_rendering_stats()) {
       base::TimeDelta current_rasterize_time =
           rendering_stats_->impl_thread_rendering_stats().rasterize_time;
       LOCAL_HISTOGRAM_CUSTOM_COUNTS(
           "Renderer4.PictureRasterTimeUS",
           (current_rasterize_time - prev_rasterize_time).InMicroseconds(),
@@ skipping 644 matching lines @@
     Tile::Id tile_id,
     scoped_ptr<ScopedResource> resource,
     const PicturePileImpl::Analysis& analysis,
     bool was_canceled) {
   DCHECK(tiles_.find(tile_id) != tiles_.end());
 
   Tile* tile = tiles_[tile_id];
   ManagedTileState& mts = tile->managed_state();
   DCHECK(mts.raster_task.get());
   orphan_raster_tasks_.push_back(mts.raster_task);
-  mts.raster_task = NULL;
+  mts.raster_task = nullptr;
 
   if (was_canceled) {
     ++update_visible_tiles_stats_.canceled_count;
     resource_pool_->ReleaseResource(resource.Pass());
     return;
   }
 
   ++update_visible_tiles_stats_.completed_count;
 
   if (analysis.is_solid_color) {
@@ skipping 104 matching lines @@
   result -= other;
   return result;
 }
 
 bool TileManager::MemoryUsage::Exceeds(const MemoryUsage& limit) const {
   return memory_bytes_ > limit.memory_bytes_ ||
          resource_count_ > limit.resource_count_;
 }
 
 }  // namespace cc