Extend VideoControl to allow clients to request lossless modes.

remoting/proto/control.proto

 // Copyright (c) 2012 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.
 //
 // Protocol for control messages.
 
 syntax = "proto2";
 
 option optimize_for = LITE_RUNTIME;
 
@@ skipping 10 matching lines @@
 
   // Horizontal and vertical DPI of the screen. If either of these is zero or
   // unset, the corresponding DPI should be assumed to be 96 (Windows' default)
   optional int32 x_dpi = 5;
   optional int32 y_dpi = 6;
 }
 
 message VideoControl {
   // Enables the video channel if true, pauses if false.
   optional bool enable = 1;
+
+  // Controls whether lossless encode and color translation are requested.
+  optional bool lossless_encode = 2;
+  optional bool lossless_color = 3;
 }
 
 message AudioControl {
   // Enables the audio channel if true, pauses if false.
   optional bool enable = 1;
 }
 
 message CursorShapeInfo {
   // Width, height (in screen pixels) of the cursor.
   optional int32 width = 1;
@@ skipping 29 matching lines @@
 message ExtensionMessage {
   // The message type. This is used to dispatch the message to the correct
   // recipient.
   optional string type = 1;
 
   // String-encoded message data. The client and host must agree on the encoding
   // for each message type; different message types need not shared the same
   // encoding.
   optional string data = 2;
 }