C++11 declares a type safe null pointer

content/common/gpu/gpu_memory_manager_unittest.cc

Index: content/common/gpu/gpu_memory_manager_unittest.cc
diff --git a/content/common/gpu/gpu_memory_manager_unittest.cc b/content/common/gpu/gpu_memory_manager_unittest.cc
index a72d4673ee2364590b41bfdf18bf582f3918d268..d3f08082394d1472795723c2db851b5e767701a9 100644
--- a/content/common/gpu/gpu_memory_manager_unittest.cc
+++ b/content/common/gpu/gpu_memory_manager_unittest.cc
@@ -87,7 +87,7 @@ class FakeClient : public GpuMemoryManagerClient {
         suggest_have_frontbuffer_(false),
         total_gpu_memory_(0),
         share_group_(share_group),
-        memory_tracker_(NULL) {
+        memory_tracker_(nullptr) {
     if (!share_group_) {
       memory_tracker_ = new FakeMemoryTracker();
       tracking_group_.reset(
@@ -101,8 +101,8 @@ class FakeClient : public GpuMemoryManagerClient {
       : memmgr_(memmgr),
         suggest_have_frontbuffer_(false),
         total_gpu_memory_(0),
-        share_group_(NULL),
-        memory_tracker_(NULL) {
+        share_group_(nullptr),
+        memory_tracker_(nullptr) {
     memory_tracker_ = new FakeMemoryTracker();
     tracking_group_.reset(
         memmgr_->CreateTrackingGroup(0, memory_tracker_.get()));
@@ -113,7 +113,7 @@ class FakeClient : public GpuMemoryManagerClient {
   virtual ~FakeClient() {
     client_state_.reset();
     tracking_group_.reset();
-    memory_tracker_ = NULL;
+    memory_tracker_ = nullptr;
   }
 
   virtual void SetMemoryAllocation(const MemoryAllocation& alloc) override {