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

cc/resources/task_graph_runner.cc

 // Copyright 2014 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/task_graph_runner.h"
 
 #include <algorithm>
 
 #include "base/debug/trace_event.h"
 #include "base/strings/stringprintf.h"
 #include "base/threading/thread_restrictions.h"
 
 namespace cc {
 namespace {
 
 // Helper class for iterating over all dependents of a task.
 class DependentIterator {
  public:
   DependentIterator(TaskGraph* graph, const Task* task)
       : graph_(graph),
         task_(task),
         current_index_(static_cast<size_t>(-1)),
-        current_node_(NULL) {
+        current_node_(nullptr) {
     ++(*this);
   }
 
   TaskGraph::Node& operator->() const {
     DCHECK_LT(current_index_, graph_->edges.size());
     DCHECK_EQ(graph_->edges[current_index_].task, task_);
     DCHECK(current_node_);
     return *current_node_;
   }
 
@@ skipping 437 matching lines @@
 
   // Finally add task to |completed_tasks_|.
   task_namespace->completed_tasks.push_back(task);
 
   // If namespace has finished running all tasks, wake up origin thread.
   if (HasFinishedRunningTasksInNamespace(task_namespace))
     has_namespaces_with_finished_running_tasks_cv_.Signal();
 }
 
 }  // namespace cc