Enforce the RemoteAccessHostRequireCurtain policy on all platforms.

remoting/host/curtain_mode_mac.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.
 
 #include "remoting/host/curtain_mode.h"
 
 #include <ApplicationServices/ApplicationServices.h>
 #include <Carbon/Carbon.h>
 #include <Security/Security.h>
 #include <unistd.h>
@@ skipping 47 matching lines @@
       on_error_(on_error),
       event_handler_(NULL) {
 }
 
 CurtainModeMac::~CurtainModeMac() {
   SetActivated(false);
 }
 
 void CurtainModeMac::SetActivated(bool activated) {
   if (activated) {
-    if (!ActivateCurtain()) {
-      on_error_.Run();
-    }
+    // Curtain-mode has issues on Mac OS X 10.7, so is currently disabled.
+    //if (!ActivateCurtain()) {
+    on_error_.Run();
+    //}
   } else {
     RemoveEventHandler();
   }
 }
 
 bool CurtainModeMac::ActivateCurtain() {
   // Try to install the switch-in handler. Do this before switching out the
   // current session so that the console session is not affected if it fails.
   if (!InstallEventHandler()) {
     return false;
@@ skipping 60 matching lines @@
 
 // static
 scoped_ptr<CurtainMode> CurtainMode::Create(
     const base::Closure& on_session_activate,
     const base::Closure& on_error) {
   return scoped_ptr<CurtainMode>(
       new CurtainModeMac(on_session_activate, on_error));
 }
 
 }  // namespace remoting