C++11 declares a type safe null pointer

content/common/gpu/media/v4l2_video_encode_accelerator.cc

Index: content/common/gpu/media/v4l2_video_encode_accelerator.cc
diff --git a/content/common/gpu/media/v4l2_video_encode_accelerator.cc b/content/common/gpu/media/v4l2_video_encode_accelerator.cc
index d69c97da551c8a5dce5b1e78dc9b0b1c75ad0b80..7922764c9213e5aee2b77951d9741dbda11787ef 100644
--- a/content/common/gpu/media/v4l2_video_encode_accelerator.cc
+++ b/content/common/gpu/media/v4l2_video_encode_accelerator.cc
@@ -60,7 +60,7 @@ V4L2VideoEncodeAccelerator::InputRecord::InputRecord() : at_device(false) {
 }
 
 V4L2VideoEncodeAccelerator::OutputRecord::OutputRecord()
-    : at_device(false), address(NULL), length(0) {
+    : at_device(false), address(nullptr), length(0) {
 }
 
 V4L2VideoEncodeAccelerator::V4L2VideoEncodeAccelerator(
@@ -507,7 +507,7 @@ void V4L2VideoEncodeAccelerator::Dequeue() {
     DCHECK(input_record.at_device);
     input_record.at_device = false;
 
-    input_record.frame = NULL;
+    input_record.frame = nullptr;
     free_input_buffers_.push_back(dqbuf.index);
     input_buffer_queued_count_--;
   }
@@ -717,7 +717,7 @@ bool V4L2VideoEncodeAccelerator::StopDevicePoll() {
   for (size_t i = 0; i < input_buffer_map_.size(); ++i) {
     InputRecord& input_record = input_buffer_map_[i];
     input_record.at_device = false;
-    input_record.frame = NULL;
+    input_record.frame = nullptr;
     free_input_buffers_.push_back(i);
   }
   input_buffer_queued_count_ = 0;
@@ -777,7 +777,7 @@ void V4L2VideoEncodeAccelerator::SetEncoderState(State state) {
 
   // We can touch encoder_state_ only if this is the encoder thread or the
   // encoder thread isn't running.
-  if (encoder_thread_.message_loop() != NULL &&
+  if (encoder_thread_.message_loop() != nullptr &&
       encoder_thread_.message_loop() != base::MessageLoop::current()) {
     encoder_thread_.message_loop()->PostTask(
         FROM_HERE,
@@ -1040,7 +1040,7 @@ bool V4L2VideoEncodeAccelerator::CreateOutputBuffers() {
     buffer.m.planes = planes;
     buffer.length = arraysize(planes);
     IOCTL_OR_ERROR_RETURN_FALSE(VIDIOC_QUERYBUF, &buffer);
-    void* address = device_->Mmap(NULL,
+    void* address = device_->Mmap(nullptr,
                                   buffer.m.planes[0].length,
                                   PROT_READ | PROT_WRITE,
                                   MAP_SHARED,
@@ -1079,7 +1079,7 @@ void V4L2VideoEncodeAccelerator::DestroyOutputBuffers() {
   DCHECK(!output_streamon_);
 
   for (size_t i = 0; i < output_buffer_map_.size(); ++i) {
-    if (output_buffer_map_[i].address != NULL)
+    if (output_buffer_map_[i].address != nullptr)
       device_->Munmap(output_buffer_map_[i].address,
                       output_buffer_map_[i].length);
   }