Add VideoLayout message.

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 62 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;
-}
+}
+
+message VideoTrackLayout {
+  // Name of the video track.
+  optional string track_name = 1;
+
+  // Position of the top left corner of the rectangle covered by the video
+  // track in DIPs (device independent pixels).
+  optional int32 position_x = 2;
+  optional int32 position_y = 3;
+
+  // Size of the area covered by the video track in DIPs.
+  optional int32 width = 4;
+  optional int32 height = 5;
+
+  // DPI of the screen.
+  optional int32 x_dpi = 6;
+  optional int32 y_dpi = 7;
+}
+
+message VideoLayout {
+  // Layout for each video track.
+  repeated VideoTrackLayout video_track = 1;
+}