C++11 declares a type safe null pointer

content/common/gpu/media/exynos_v4l2_video_device.cc

 // Copyright 2014 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 <fcntl.h>
 #include <libdrm/drm_fourcc.h>
 #include <linux/videodev2.h>
 #include <poll.h>
 #include <sys/eventfd.h>
@@ skipping 92 matching lines @@
       return true;
     } else {
       DPLOG(ERROR) << "ClearDevicePollInterrupt(): read() failed";
       return false;
     }
   }
   return true;
 }
 
 bool ExynosV4L2Device::Initialize() {
-  const char* device_path = NULL;
+  const char* device_path = nullptr;
   switch (type_) {
     case kDecoder:
       device_path = kDecoderDevice;
       break;
     case kEncoder:
       device_path = kEncoderDevice;
       break;
     case kImageProcessor:
       device_path = kImageProcessorDevice;
       break;
@@ skipping 46 matching lines @@
   attrs[3] = frame_buffer_size.height();
   attrs[5] = DRM_FORMAT_NV12;
   attrs[7] = dmabuf_fds[0].get();
   attrs[9] = 0;
   attrs[11] = frame_buffer_size.width();
   attrs[13] = dmabuf_fds[1].get();
   attrs[15] = 0;
   attrs[17] = frame_buffer_size.width();
 
   EGLImageKHR egl_image = eglCreateImageKHR(
-      egl_display, EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, attrs);
+      egl_display, EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, nullptr, attrs);
   if (egl_image == EGL_NO_IMAGE_KHR) {
     return egl_image;
   }
   glBindTexture(GL_TEXTURE_EXTERNAL_OES, texture_id);
   glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, egl_image);
 
   return egl_image;
 }
 
 EGLBoolean ExynosV4L2Device::DestroyEGLImage(EGLDisplay egl_display,
@@ skipping 11 matching lines @@
 }
 
 uint32 ExynosV4L2Device::PreferredOutputFormat() {
   // TODO(posciak): We should support "dontcare" returns here once we
   // implement proper handling (fallback, negotiation) for this in users.
   CHECK_EQ(type_, kDecoder);
   return V4L2_PIX_FMT_NV12M;
 }
 
 }  //  namespace content