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

cc/animation/layer_animation_controller.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/animation/layer_animation_controller.h"
 
 #include <algorithm>
 
 #include "cc/animation/animation.h"
 #include "cc/animation/animation_delegate.h"
 #include "cc/animation/animation_registrar.h"
 #include "cc/animation/keyframed_animation_curve.h"
 #include "cc/animation/layer_animation_value_observer.h"
 #include "cc/animation/layer_animation_value_provider.h"
 #include "cc/animation/scroll_offset_animation_curve.h"
 #include "cc/base/scoped_ptr_algorithm.h"
 #include "cc/output/filter_operations.h"
 #include "ui/gfx/box_f.h"
 #include "ui/gfx/transform.h"
 
 namespace cc {
 
 LayerAnimationController::LayerAnimationController(int id)
     : registrar_(0),
       id_(id),
       is_active_(false),
-      value_provider_(NULL),
-      layer_animation_delegate_(NULL),
+      value_provider_(nullptr),
+      layer_animation_delegate_(nullptr),
       needs_to_start_animations_(false) {
 }
 
 LayerAnimationController::~LayerAnimationController() {
   if (registrar_)
     registrar_->UnregisterAnimationController(this);
 }
 
 scoped_refptr<LayerAnimationController> LayerAnimationController::Create(
     int id) {
@@ skipping 887 matching lines @@
 }
 
 void LayerAnimationController::NotifyObserversOpacityAnimated(
     float opacity,
     bool notify_active_observers,
     bool notify_pending_observers) {
   if (value_observers_.might_have_observers()) {
     ObserverListBase<LayerAnimationValueObserver>::Iterator it(
         value_observers_);
     LayerAnimationValueObserver* obs;
-    while ((obs = it.GetNext()) != NULL) {
+    while ((obs = it.GetNext()) != nullptr) {
       if ((notify_active_observers && notify_pending_observers) ||
           (notify_active_observers && obs->IsActive()) ||
           (notify_pending_observers && !obs->IsActive()))
         obs->OnOpacityAnimated(opacity);
     }
   }
 }
 
 void LayerAnimationController::NotifyObserversTransformAnimated(
     const gfx::Transform& transform,
     bool notify_active_observers,
     bool notify_pending_observers) {
   if (value_observers_.might_have_observers()) {
     ObserverListBase<LayerAnimationValueObserver>::Iterator it(
         value_observers_);
     LayerAnimationValueObserver* obs;
-    while ((obs = it.GetNext()) != NULL) {
+    while ((obs = it.GetNext()) != nullptr) {
       if ((notify_active_observers && notify_pending_observers) ||
           (notify_active_observers && obs->IsActive()) ||
           (notify_pending_observers && !obs->IsActive()))
         obs->OnTransformAnimated(transform);
     }
   }
 }
 
 void LayerAnimationController::NotifyObserversFilterAnimated(
     const FilterOperations& filters,
     bool notify_active_observers,
     bool notify_pending_observers) {
   if (value_observers_.might_have_observers()) {
     ObserverListBase<LayerAnimationValueObserver>::Iterator it(
         value_observers_);
     LayerAnimationValueObserver* obs;
-    while ((obs = it.GetNext()) != NULL) {
+    while ((obs = it.GetNext()) != nullptr) {
       if ((notify_active_observers && notify_pending_observers) ||
           (notify_active_observers && obs->IsActive()) ||
           (notify_pending_observers && !obs->IsActive()))
         obs->OnFilterAnimated(filters);
     }
   }
 }
 
 void LayerAnimationController::NotifyObserversScrollOffsetAnimated(
     const gfx::Vector2dF& scroll_offset,
     bool notify_active_observers,
     bool notify_pending_observers) {
   if (value_observers_.might_have_observers()) {
     ObserverListBase<LayerAnimationValueObserver>::Iterator it(
         value_observers_);
     LayerAnimationValueObserver* obs;
-    while ((obs = it.GetNext()) != NULL) {
+    while ((obs = it.GetNext()) != nullptr) {
       if ((notify_active_observers && notify_pending_observers) ||
           (notify_active_observers && obs->IsActive()) ||
           (notify_pending_observers && !obs->IsActive()))
         obs->OnScrollOffsetAnimated(scroll_offset);
     }
   }
 }
 
 void LayerAnimationController::NotifyObserversAnimationWaitingForDeletion() {
   FOR_EACH_OBSERVER(LayerAnimationValueObserver,
                     value_observers_,
                     OnAnimationWaitingForDeletion());
 }
 
 bool LayerAnimationController::HasValueObserver() {
   if (value_observers_.might_have_observers()) {
     ObserverListBase<LayerAnimationValueObserver>::Iterator it(
         value_observers_);
-    return it.GetNext() != NULL;
+    return it.GetNext() != nullptr;
   }
   return false;
 }
 
 bool LayerAnimationController::HasActiveValueObserver() {
   if (value_observers_.might_have_observers()) {
     ObserverListBase<LayerAnimationValueObserver>::Iterator it(
         value_observers_);
     LayerAnimationValueObserver* obs;
-    while ((obs = it.GetNext()) != NULL)
+    while ((obs = it.GetNext()) != nullptr)
       if (obs->IsActive())
         return true;
   }
   return false;
 }
 
 }  // namespace cc