Move move classes to the remoting::protocol namespace. Minor cleanups.

remoting/proto/control.proto

 // Copyright (c) 2010 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;
 
 // TODO(hclam): Isolate rectangle from these two messages.
 message SuggestResolutionRequest {
   required int32 width = 1;
   required int32 height = 2;
 };
 
 message NotifyResolutionRequest {
   required int32 width = 1;
   required int32 height = 2;
 };
-
-// Represents a message being sent on the control channel.
-message ControlMessage {
-  optional SuggestResolutionRequest suggest_resolution = 1;
-  optional NotifyResolutionRequest notify_resolution = 2;
-}