Linux: change protobuf default option to allow building

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;
-
 package remoting.protocol;
 
 message ClientDimensions {
   // Width and height of the client.
   optional int32 width = 1;
   optional int32 height = 2;
 }
 
 message VideoControl {
   // Enables the video channel if true, pauses if false.
@@ skipping 10 matching lines @@
   optional int32 width = 1;
   optional int32 height = 2;
 
   // X,Y coordinates (relative to upper-left corner) of the cursor hotspot.
   optional int32 hotspot_x = 3;
   optional int32 hotspot_y = 4;
 
   // Cursor pixmap data in 32-bit BGRA format.
   optional bytes data = 5;
 }