Hide the cursor on the client when it is hidden on the host

remoting/host/video_scheduler.cc

Index: remoting/host/video_scheduler.cc
diff --git a/remoting/host/video_scheduler.cc b/remoting/host/video_scheduler.cc
index 3e54e5a85cbc5b46269f44e38e118cd3633aceb7..b1ba65b5189ae0735a969633d93f4412bf796791 100644
--- a/remoting/host/video_scheduler.cc
+++ b/remoting/host/video_scheduler.cc
@@ -121,8 +121,8 @@ void VideoScheduler::OnMouseCursor(webrtc::MouseCursor* cursor) {
   cursor_proto->set_height(cursor->image()->size().height());
   cursor_proto->set_hotspot_x(cursor->hotspot().x());
   cursor_proto->set_hotspot_y(cursor->hotspot().y());
+  cursor_proto->set_data(std::string());

[kelvinp, 2015/01/06 02:22:18]

Always initializes with empty data.  Or else
ClientControlDispatcher::CursorShapeIsValid on the host will complains that the
cursor info is missing a required field.  

[Sergey Ulanov, 2015/01/06 18:52:10]

nit: add an empty line above this one and remove it below - that would make it
clear that the block below sets the data field.

[kelvinp, 2015/01/06 22:04:14]

Done.

 
-  std::string data;
   uint8_t* current_row = cursor->image()->data();
   for (int y = 0; y < cursor->image()->size().height(); ++y) {
     cursor_proto->mutable_data()->append(