Use HMAC SHA-256, since SHA-1 won't work inside the Windows sandbox.

remoting/protocol/session_config.cc

Index: remoting/protocol/session_config.cc
diff --git a/remoting/protocol/session_config.cc b/remoting/protocol/session_config.cc
index c173418ee7ac55762bfa54cf539e801cbea32f48..57dbe2884bdb8024de43eaaf95879d3bf71b5e1a 100644
--- a/remoting/protocol/session_config.cc
+++ b/remoting/protocol/session_config.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
@@ -9,7 +9,7 @@
 namespace remoting {
 namespace protocol {
 
-const int kDefaultStreamVersion = 1;
+const int kDefaultStreamVersion = 2;
 
 namespace {
 const int kDefaultWidth = 800;