C++11 declares a type safe null pointer

content/common/gpu/media/vaapi_video_decode_accelerator.cc

Index: content/common/gpu/media/vaapi_video_decode_accelerator.cc
diff --git a/content/common/gpu/media/vaapi_video_decode_accelerator.cc b/content/common/gpu/media/vaapi_video_decode_accelerator.cc
index df1f6443421d197b67aa31ef61634307175a242d..f9bd31a5a1f0828832b542d25c7df29989c1c8ba 100644
--- a/content/common/gpu/media/vaapi_video_decode_accelerator.cc
+++ b/content/common/gpu/media/vaapi_video_decode_accelerator.cc
@@ -210,7 +210,7 @@ bool VaapiVideoDecodeAccelerator::TFPPicture::Bind() {
     return false;
 
   gfx::ScopedTextureBinder texture_binder(GL_TEXTURE_2D, texture_id_);
-  glXBindTexImageEXT(x_display_, glx_pixmap_, GLX_FRONT_LEFT_EXT, NULL);
+  glXBindTexImageEXT(x_display_, glx_pixmap_, GLX_FRONT_LEFT_EXT, nullptr);
 
   return true;
 }
@@ -220,7 +220,7 @@ VaapiVideoDecodeAccelerator::TFPPicture*
   TFPPictures::iterator it = tfp_pictures_.find(picture_buffer_id);
   if (it == tfp_pictures_.end()) {
     LOG(ERROR) << "Picture id " << picture_buffer_id << " does not exist";
-    return NULL;
+    return nullptr;
   }
 
   return it->second.get();