C++11 declares a type safe null pointer

content/common/gpu/client/command_buffer_proxy_impl.h

Index: content/common/gpu/client/command_buffer_proxy_impl.h
diff --git a/content/common/gpu/client/command_buffer_proxy_impl.h b/content/common/gpu/client/command_buffer_proxy_impl.h
index 1ff5d0d138298e48378ff640aba1d544902c99c7..2768f0343f1f526cf884d310857867bb71cd680b 100644
--- a/content/common/gpu/client/command_buffer_proxy_impl.h
+++ b/content/common/gpu/client/command_buffer_proxy_impl.h
@@ -66,17 +66,19 @@ class CommandBufferProxyImpl
 
   // Sends an IPC message to create a GpuVideoDecodeAccelerator. Creates and
   // returns it as an owned pointer to a media::VideoDecodeAccelerator.  Returns
-  // NULL on failure to create the GpuVideoDecodeAcceleratorHost.
+  // nullptr on failure to create the GpuVideoDecodeAcceleratorHost.
   // Note that the GpuVideoDecodeAccelerator may still fail to be created in
-  // the GPU process, even if this returns non-NULL. In this case the VDA client
-  // is notified of an error later, after Initialize().
+  // the GPU process, even if this returns non-nullptr.
+  // In this case the VDA clienta is notified of an error later,
+  // after Initialize().
   scoped_ptr<media::VideoDecodeAccelerator> CreateVideoDecoder();
 
   // Sends an IPC message to create a GpuVideoEncodeAccelerator. Creates and
   // returns it as an owned pointer to a media::VideoEncodeAccelerator.  Returns
-  // NULL on failure to create the GpuVideoEncodeAcceleratorHost.
+  // nullptr on failure to create the GpuVideoEncodeAcceleratorHost.
   // Note that the GpuVideoEncodeAccelerator may still fail to be created in
-  // the GPU process, even if this returns non-NULL. In this case the VEA client
+  // the GPU process, even if this returns non-nullptr.
+  // In this case the VEA client
   // is notified of an error later, after Initialize();
   scoped_ptr<media::VideoEncodeAccelerator> CreateVideoEncoder();