Refactor SetOmahaExperimentLabel out of gcpai and into install_util.

chrome/installer/util/google_chrome_sxs_distribution.cc

 // 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.
 //
 // This file defines implementation of GoogleChromeSxSDistribution.
 
 #include "chrome/installer/util/google_chrome_sxs_distribution.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 53 matching lines @@
 
 bool GoogleChromeSxSDistribution::GetCommandExecuteImplClsid(
     string16* handler_class_uuid) {
   return false;
 }
 
 bool GoogleChromeSxSDistribution::AppHostIsSupported() {
   return false;
 }
 
+bool GoogleChromeSxSDistribution::ShouldSetExperimentLabels() {
+  return true;
+}
+
 string16 GoogleChromeSxSDistribution::ChannelName() {
   return kChannelName;
 }