Rename ClientDimensions to ClientResolution and add pixel-size and DPI fields.

remoting/protocol/host_control_dispatcher.cc

Index: remoting/protocol/host_control_dispatcher.cc
diff --git a/remoting/protocol/host_control_dispatcher.cc b/remoting/protocol/host_control_dispatcher.cc
index 2dc83afb4af9dc7fdda6f3ec1356bc1bb47b2a97..db041b4c5510e7b0b87c1c7612d72380fa50d4b3 100644
--- a/remoting/protocol/host_control_dispatcher.cc
+++ b/remoting/protocol/host_control_dispatcher.cc
@@ -54,8 +54,8 @@ void HostControlDispatcher::OnMessageReceived(
 
   if (message->has_clipboard_event()) {
     clipboard_stub_->InjectClipboardEvent(message->clipboard_event());
-  } else if (message->has_client_dimensions()) {
-    host_stub_->NotifyClientDimensions(message->client_dimensions());
+  } else if (message->has_client_resolution()) {
+    host_stub_->NotifyClientResolution(message->client_resolution());
   } else if (message->has_video_control()) {
     host_stub_->ControlVideo(message->video_control());
   } else if (message->has_audio_control()) {