C++11 declares a type safe null pointer

content/common/sandbox_linux/bpf_gpu_policy_linux.cc

Index: content/common/sandbox_linux/bpf_gpu_policy_linux.cc
diff --git a/content/common/sandbox_linux/bpf_gpu_policy_linux.cc b/content/common/sandbox_linux/bpf_gpu_policy_linux.cc
index 74f9871fc30a92c8cd3abca5527c5ebb896937d1..5db8a05ae331ef66eb8f005eeb9a67283ce43f26 100644
--- a/content/common/sandbox_linux/bpf_gpu_policy_linux.cc
+++ b/content/common/sandbox_linux/bpf_gpu_policy_linux.cc
@@ -148,15 +148,15 @@ void UpdateProcessTypeToGpuBroker() {
   base::CommandLine::StringVector exec =
       base::CommandLine::ForCurrentProcess()->GetArgs();
   base::CommandLine::Reset();
-  base::CommandLine::Init(0, NULL);
+  base::CommandLine::Init(0, nullptr);
   base::CommandLine::ForCurrentProcess()->InitFromArgv(exec);
   base::CommandLine::ForCurrentProcess()->AppendSwitchASCII(
       switches::kProcessType, "gpu-broker");
 
   // Update the process title. The argv was already cached by the call to
   // SetProcessTitleFromCommandLine in content_main_runner.cc, so we can pass
-  // NULL here (we don't have the original argv at this point).
-  SetProcessTitleFromCommandLine(NULL);
+  // nullptr here (we don't have the original argv at this point).
+  SetProcessTitleFromCommandLine(nullptr);
 }
 
 bool UpdateProcessTypeAndEnableSandbox(sandbox::bpf_dsl::SandboxBPFDSLPolicy* (
@@ -169,7 +169,7 @@ bool UpdateProcessTypeAndEnableSandbox(sandbox::bpf_dsl::SandboxBPFDSLPolicy* (
 
 }  // namespace
 
-GpuProcessPolicy::GpuProcessPolicy() : broker_process_(NULL) {}
+GpuProcessPolicy::GpuProcessPolicy() : broker_process_(nullptr) {}
 
 GpuProcessPolicy::~GpuProcessPolicy() {}
 
@@ -225,7 +225,7 @@ bool GpuProcessPolicy::PreSandboxHook() {
     // Accelerated video dlopen()'s some shared objects
     // inside the sandbox, so preload them now.
     if (IsAcceleratedVideoEnabled()) {
-      const char* I965DrvVideoPath = NULL;
+      const char* I965DrvVideoPath = nullptr;
 
       if (IsArchitectureX86_64()) {
         I965DrvVideoPath = "/usr/lib64/va/drivers/i965_drv_video.so";
@@ -249,7 +249,7 @@ void GpuProcessPolicy::InitGpuBrokerProcess(
   static const char kDriRcPath[] = "/etc/drirc";
   static const char kDriCard0Path[] = "/dev/dri/card0";
 
-  CHECK(broker_process_ == NULL);
+  CHECK(broker_process_ == nullptr);
 
   // All GPU process policies need these files brokered out.
   std::vector<std::string> read_whitelist;