Adding a policy for using the uiAccess enabled It2Me binary on Windows

remoting/host/policy_watcher.cc

 // Copyright 2015 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.
 
 // Most of this code is copied from:
 //   src/chrome/browser/policy/asynchronous_policy_loader.{h,cc}
 
 #include "remoting/host/policy_watcher.h"
 
 #include <utility>
@@ skipping 177 matching lines @@
   default_values_->SetString(key::kRemoteAccessHostTokenUrl, std::string());
   default_values_->SetString(key::kRemoteAccessHostTokenValidationUrl,
                              std::string());
   default_values_->SetString(
       key::kRemoteAccessHostTokenValidationCertificateIssuer, std::string());
   default_values_->SetBoolean(key::kRemoteAccessHostAllowClientPairing, true);
   default_values_->SetBoolean(key::kRemoteAccessHostAllowGnubbyAuth, true);
   default_values_->SetBoolean(key::kRemoteAccessHostAllowRelayedConnection,
                               true);
   default_values_->SetString(key::kRemoteAccessHostUdpPortRange, "");
+  default_values_->SetBoolean(
+      key::kRemoteAccessHostAllowUiAccessForRemoteAssistance, false);
 }
 
 PolicyWatcher::~PolicyWatcher() {
   // Stop observing |policy_service_| if StartWatching() has been called.
   if (!policy_updated_callback_.is_null()) {
     policy_service_->RemoveObserver(policy::POLICY_DOMAIN_CHROME, this);
   }
 
   if (owned_policy_provider_) {
     owned_policy_provider_->Shutdown();
@@ skipping 174 matching lines @@
       CreateSchemaRegistry()));
 #else
 #error OS that is not yet supported by PolicyWatcher code.
 #endif
 
   return PolicyWatcher::CreateFromPolicyLoader(std::move(policy_loader));
 #endif  // !(OS_CHROMEOS)
 }
 
 }  // namespace remoting