Run clang-modernize -use-nullptr over src/extensions/.

extensions/browser/api/system_cpu/cpu_info_provider.cc

 // Copyright 2013 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 "extensions/browser/api/system_cpu/cpu_info_provider.h"
 
 #include "base/sys_info.h"
 
 namespace extensions {
 
 using core_api::system_cpu::CpuInfo;
 
 // Static member intialization.
 base::LazyInstance<scoped_refptr<CpuInfoProvider> > CpuInfoProvider::provider_ =
     LAZY_INSTANCE_INITIALIZER;
 
 CpuInfoProvider::CpuInfoProvider() {
 }
 
 CpuInfoProvider::~CpuInfoProvider() {
 }
 
 void CpuInfoProvider::InitializeForTesting(
     scoped_refptr<CpuInfoProvider> provider) {
-  DCHECK(provider.get() != NULL);
+  DCHECK(provider.get() != nullptr);
   provider_.Get() = provider;
 }
 
 bool CpuInfoProvider::QueryInfo() {
   info_.num_of_processors = base::SysInfo::NumberOfProcessors();
   info_.arch_name = base::SysInfo::OperatingSystemArchitecture();
   info_.model_name = base::SysInfo::CPUModelName();
   info_.features = GetFeatures();
 
   info_.processors.clear();
@@ skipping 25 matching lines @@
     features.push_back("sse4_1");
   if (cpu_.has_sse42())
     features.push_back("sse4_2");
   if (cpu_.has_avx())
     features.push_back("avx");
   return features;
 }
 
 // static
 CpuInfoProvider* CpuInfoProvider::Get() {
-  if (provider_.Get().get() == NULL)
+  if (provider_.Get().get() == nullptr)
     provider_.Get() = new CpuInfoProvider();
   return provider_.Get().get();
 }
 
 }  // namespace extensions