Enable Spdy for SxS build.

chrome/installer/util/google_chrome_sxs_distribution.cc

 // 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.
 //
 // This file defines implementation of GoogleChromeSxSDistribution.
 
 #include "chrome/installer/util/google_chrome_sxs_distribution.h"
 
 #include "installer_util_strings.h"
 
@@ skipping 24 matching lines @@
 }
 
 bool GoogleChromeSxSDistribution::CanSetAsDefault() {
   return false;
 }
 
 bool GoogleChromeSxSDistribution::ShouldUseAlternateIcon() {
   return true;
 }
 
+bool GoogleChromeSxSDistribution::IsSpdyEnabled() {
+  return true;
+}
+
+std::string GoogleChromeSxSDistribution::GetSpdyMode() {
+  return "npn";
+}
+
 bool GoogleChromeSxSDistribution::GetChromeChannel(std::wstring* channel) {
   *channel = L"SxS";
   return true;
 }