Switch remoting/protocol to new callbacks

remoting/protocol/input_sender.cc

Index: remoting/protocol/input_sender.cc
diff --git a/remoting/protocol/input_sender.cc b/remoting/protocol/input_sender.cc
index b02956a68fd406ed877e0f47723aaca8c0edd368..0ab2923bd0dc2bef515f6aeb8add96ec52495063 100644
--- a/remoting/protocol/input_sender.cc
+++ b/remoting/protocol/input_sender.cc
@@ -22,7 +22,7 @@ InputSender::InputSender(base::MessageLoopProxy* message_loop,
     : buffered_writer_(new BufferedSocketWriter(message_loop)) {
   // TODO(garykac) Set write failed callback.
   DCHECK(socket);
-  buffered_writer_->Init(socket, NULL);
+  buffered_writer_->Init(socket, BufferedSocketWriter::WriteFailedCallback());
 }
 
 InputSender::~InputSender() {
@@ -32,14 +32,14 @@ void InputSender::InjectKeyEvent(const KeyEvent& event) {
   EventMessage message;
   message.set_sequence_number(base::Time::Now().ToInternalValue());
   message.mutable_key_event()->CopyFrom(event);
-  buffered_writer_->Write(SerializeAndFrameMessage(message), NULL);
+  buffered_writer_->Write(SerializeAndFrameMessage(message), base::Closure());
 }
 
 void InputSender::InjectMouseEvent(const MouseEvent& event) {
   EventMessage message;
   message.set_sequence_number(base::Time::Now().ToInternalValue());
   message.mutable_mouse_event()->CopyFrom(event);
-  buffered_writer_->Write(SerializeAndFrameMessage(message), NULL);
+  buffered_writer_->Write(SerializeAndFrameMessage(message), base::Closure());
 }
 
 void InputSender::Close() {