Chromoting needs null GPO provider in PolicyLoaderWin.

components/policy/core/common/policy_loader_win.cc

 // Copyright (c) 2014 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 "components/policy/core/common/policy_loader_win.h"
 
 #include <windows.h>
 #include <lm.h>       // For limits.
 #include <ntdsapi.h>  // For Ds[Un]Bind
 #include <rpc.h>      // For struct GUID
@@ skipping 444 matching lines @@
     // the FILE thread on which this code runs in steady state. Given that
     // there have never been any reports of issues due to partially-applied /
     // corrupt group policy, this code intentionally omits the
     // EnterCriticalPolicySection() call.
     //
     // If there's ever reason to revisit this decision, one option could be to
     // make the EnterCriticalPolicySection() call on a dedicated thread and
     // timeout on it more aggressively. For now, there's no justification for
     // the additional effort this would introduce.
 
-    if (is_enterprise || !ReadPolicyFromGPO(scope, &gpo_dict, &status)) {
-      VLOG_IF(1, !is_enterprise) << "Failed to read GPO files for " << scope
-                                 << " falling back to registry.";
+    bool is_registry_forced = is_enterprise || gpo_provider_ == nullptr;
+    if (is_registry_forced || !ReadPolicyFromGPO(scope, &gpo_dict, &status)) {
+      VLOG_IF(1, !is_registry_forced) << "Failed to read GPO files for "
+                                      << scope << " falling back to registry.";
       gpo_dict.ReadRegistry(kScopes[i].hive, chrome_policy_key_);
     }
 
     // Remove special-cased entries from the GPO dictionary.
     scoped_ptr<RegistryDict> recommended_dict(
         gpo_dict.RemoveKey(kKeyRecommended));
     scoped_ptr<RegistryDict> third_party_dict(
         gpo_dict.RemoveKey(kKeyThirdParty));
 
     // Load Chrome policy.
@@ skipping 210 matching lines @@
           "418183 PolicyLoaderWin::OnObjectSignaled"));
 
   DCHECK(object == user_policy_changed_event_.handle() ||
          object == machine_policy_changed_event_.handle())
       << "unexpected object signaled policy reload, obj = "
       << std::showbase << std::hex << object;
   Reload(false);
 }
 
 }  // namespace policy