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

cc/trees/tree_synchronizer_unittest.cc

 // Copyright 2011 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/trees/tree_synchronizer.h"
 
 #include <algorithm>
 #include <set>
 #include <vector>
 
@@ skipping 24 matching lines @@
       layer_impl_destruction_list_->push_back(id());
   }
 
   void SetLayerImplDestructionList(std::vector<int>* list) {
     layer_impl_destruction_list_ = list;
   }
 
  private:
   MockLayerImpl(LayerTreeImpl* tree_impl, int layer_id)
       : LayerImpl(tree_impl, layer_id),
-        layer_impl_destruction_list_(NULL) {}
+        layer_impl_destruction_list_(nullptr) {}
 
   std::vector<int>* layer_impl_destruction_list_;
 };
 
 class MockLayer : public Layer {
  public:
   static scoped_refptr<MockLayer> Create(
       std::vector<int>* layer_impl_destruction_list) {
     return make_scoped_refptr(new MockLayer(layer_impl_destruction_list));
   }
@@ skipping 139 matching lines @@
 
  protected:
   FakeLayerTreeHostClient client_;
   scoped_ptr<FakeLayerTreeHost> host_;
 };
 
 // Attempts to synchronizes a null tree. This should not crash, and should
 // return a null tree.
 TEST_F(TreeSynchronizerTest, SyncNullTree) {
   scoped_ptr<LayerImpl> layer_impl_tree_root =
-      TreeSynchronizer::SynchronizeTrees(static_cast<Layer*>(NULL),
+      TreeSynchronizer::SynchronizeTrees(static_cast<Layer*>(nullptr),
                                          scoped_ptr<LayerImpl>(),
                                          host_->active_tree());
 
   EXPECT_TRUE(!layer_impl_tree_root.get());
 }
 
 // Constructs a very simple tree and synchronizes it without trying to reuse any
 // preexisting layers.
 TEST_F(TreeSynchronizerTest, SyncSimpleTreeFromEmpty) {
   scoped_refptr<Layer> layer_tree_root = Layer::Create();
@@ skipping 303 matching lines @@
   scoped_ptr<LayerImpl> layer_impl_tree_root =
       TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
                                          scoped_ptr<LayerImpl>(),
                                          host_->active_tree());
 
   ExpectTreesAreIdentical(layer_tree_root.get(),
                           layer_impl_tree_root.get(),
                           host_->active_tree());
 
   // Remove the mask layer.
-  layer_tree_root->children()[0]->SetMaskLayer(NULL);
+  layer_tree_root->children()[0]->SetMaskLayer(nullptr);
   layer_impl_tree_root =
       TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
                                          layer_impl_tree_root.Pass(),
                                          host_->active_tree());
   ExpectTreesAreIdentical(layer_tree_root.get(),
                           layer_impl_tree_root.get(),
                           host_->active_tree());
 
   // Remove the replica layer.
-  layer_tree_root->children()[1]->SetReplicaLayer(NULL);
+  layer_tree_root->children()[1]->SetReplicaLayer(nullptr);
   layer_impl_tree_root =
       TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
                                          layer_impl_tree_root.Pass(),
                                          host_->active_tree());
   ExpectTreesAreIdentical(layer_tree_root.get(),
                           layer_impl_tree_root.get(),
                           host_->active_tree());
 
   // Remove the replica mask.
-  replica_layer_with_mask->SetMaskLayer(NULL);
+  replica_layer_with_mask->SetMaskLayer(nullptr);
   layer_impl_tree_root =
       TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
                                          layer_impl_tree_root.Pass(),
                                          host_->active_tree());
   ExpectTreesAreIdentical(layer_tree_root.get(),
                           layer_impl_tree_root.get(),
                           host_->active_tree());
 }
 
 TEST_F(TreeSynchronizerTest, SynchronizeAnimations) {
   LayerTreeSettings settings;
   FakeProxy proxy;
   DebugScopedSetImplThread impl(&proxy);
   FakeRenderingStatsInstrumentation stats_instrumentation;
   scoped_ptr<SharedBitmapManager> shared_bitmap_manager(
       new TestSharedBitmapManager());
   scoped_ptr<LayerTreeHostImpl> host_impl =
       LayerTreeHostImpl::Create(settings,
-                                NULL,
+                                nullptr,
                                 &proxy,
                                 &stats_instrumentation,
                                 shared_bitmap_manager.get(),
                                 0);
 
   scoped_refptr<Layer> layer_tree_root = Layer::Create();
   host_->SetRootLayer(layer_tree_root);
 
   layer_tree_root->SetLayerAnimationControllerForTest(
       FakeLayerAnimationController::Create());
@@ skipping 18 matching lines @@
 
 TEST_F(TreeSynchronizerTest, SynchronizeScrollParent) {
   LayerTreeSettings settings;
   FakeProxy proxy;
   DebugScopedSetImplThread impl(&proxy);
   FakeRenderingStatsInstrumentation stats_instrumentation;
   scoped_ptr<SharedBitmapManager> shared_bitmap_manager(
       new TestSharedBitmapManager());
   scoped_ptr<LayerTreeHostImpl> host_impl =
       LayerTreeHostImpl::Create(settings,
-                                NULL,
+                                nullptr,
                                 &proxy,
                                 &stats_instrumentation,
                                 shared_bitmap_manager.get(),
                                 0);
 
   scoped_refptr<Layer> layer_tree_root = Layer::Create();
   scoped_refptr<Layer> scroll_parent = Layer::Create();
   layer_tree_root->AddChild(scroll_parent);
   layer_tree_root->AddChild(Layer::Create());
   layer_tree_root->AddChild(Layer::Create());
@@ skipping 52 matching lines @@
 
 TEST_F(TreeSynchronizerTest, SynchronizeClipParent) {
   LayerTreeSettings settings;
   FakeProxy proxy;
   DebugScopedSetImplThread impl(&proxy);
   FakeRenderingStatsInstrumentation stats_instrumentation;
   scoped_ptr<SharedBitmapManager> shared_bitmap_manager(
       new TestSharedBitmapManager());
   scoped_ptr<LayerTreeHostImpl> host_impl =
       LayerTreeHostImpl::Create(settings,
-                                NULL,
+                                nullptr,
                                 &proxy,
                                 &stats_instrumentation,
                                 shared_bitmap_manager.get(),
                                 0);
 
   scoped_refptr<Layer> layer_tree_root = Layer::Create();
   scoped_refptr<Layer> clip_parent = Layer::Create();
   scoped_refptr<Layer> intervening = Layer::Create();
   scoped_refptr<Layer> clip_child1 = Layer::Create();
   scoped_refptr<Layer> clip_child2 = Layer::Create();
@@ skipping 13 matching lines @@
                                          scoped_ptr<LayerImpl>(),
                                          host_impl->active_tree());
   TreeSynchronizer::PushProperties(layer_tree_root.get(),
                                    layer_impl_tree_root.get());
   ExpectTreesAreIdentical(layer_tree_root.get(),
                           layer_impl_tree_root.get(),
                           host_impl->active_tree());
 
   // Remove the first clip child.
   clip_child1->RemoveFromParent();
-  clip_child1 = NULL;
+  clip_child1 = nullptr;
 
   layer_impl_tree_root =
       TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
                                          layer_impl_tree_root.Pass(),
                                          host_impl->active_tree());
   TreeSynchronizer::PushProperties(layer_tree_root.get(),
                                    layer_impl_tree_root.get());
   ExpectTreesAreIdentical(layer_tree_root.get(),
                           layer_impl_tree_root.get(),
                           host_impl->active_tree());
 
   // Add an additional clip child.
   scoped_refptr<Layer> additional_clip_child = Layer::Create();
   intervening->AddChild(additional_clip_child);
   additional_clip_child->SetClipParent(clip_parent.get());
   layer_impl_tree_root =
       TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
                                          layer_impl_tree_root.Pass(),
                                          host_impl->active_tree());
   TreeSynchronizer::PushProperties(layer_tree_root.get(),
                                    layer_impl_tree_root.get());
   ExpectTreesAreIdentical(layer_tree_root.get(),
                           layer_impl_tree_root.get(),
                           host_impl->active_tree());
 
   // Remove the nearest clipping ancestor.
   clip_parent->RemoveFromParent();
-  clip_parent = NULL;
+  clip_parent = nullptr;
   layer_impl_tree_root =
       TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
                                          layer_impl_tree_root.Pass(),
                                          host_impl->active_tree());
   TreeSynchronizer::PushProperties(layer_tree_root.get(),
                                    layer_impl_tree_root.get());
   ExpectTreesAreIdentical(layer_tree_root.get(),
                           layer_impl_tree_root.get(),
                           host_impl->active_tree());
 
   // The clip children should have been unhooked.
   EXPECT_EQ(2u, intervening->children().size());
   EXPECT_FALSE(clip_child2->clip_parent());
   EXPECT_FALSE(additional_clip_child->clip_parent());
 }
 
 }  // namespace
 }  // namespace cc