Switch usage of _DEBUG macro to NDEBUG.

webrtc/base/taskparent.cc

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 28 matching lines @@
 // Does common initialization of member variables
 void TaskParent::Initialize() {
   children_.reset(new ChildSet());
   child_error_ = false;
 }
 
 void TaskParent::AddChild(Task *child) {
   children_->insert(child);
 }
 
-#ifdef _DEBUG
+#if !defined(NDEBUG)
 bool TaskParent::IsChildTask(Task *task) {
   ASSERT(task != NULL);
   return task->parent_ == this && children_->find(task) != children_->end();
 }
 #endif
 
 bool TaskParent::AllChildrenDone() {
   for (ChildSet::iterator it = children_->begin();
        it != children_->end();
        ++it) {
     if (!(*it)->IsDone())
       return false;
   }
   return true;
 }
 
 bool TaskParent::AnyChildError() {
   return child_error_;
 }
 
 void TaskParent::AbortAllChildren() {
   if (children_->size() > 0) {
-#ifdef _DEBUG
+#if !defined(NDEBUG)
     runner_->IncrementAbortCount();
 #endif
 
     ChildSet copy = *children_;
     for (ChildSet::iterator it = copy.begin(); it != copy.end(); ++it) {
       (*it)->Abort(true);  // Note we do not wake
     }
 
-#ifdef _DEBUG
+#if !defined(NDEBUG)
     runner_->DecrementAbortCount();
 #endif
   }
 }
 
 void TaskParent::OnStopped(Task *task) {
   AbortAllChildren();
   parent_->OnChildStopped(task);
 }
 
 void TaskParent::OnChildStopped(Task *child) {
   if (child->HasError())
     child_error_ = true;
   children_->erase(child);
 }
 
 } // namespace rtc