Using PolicyServiceWatcher instead of PolicyWatcherLinux/Win/Mac.

remoting/host/policy_hack/policy_watcher_mac.mm

-// 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/policy_hack/policy_watcher.h"
-
-#include <CoreFoundation/CoreFoundation.h>
-
-#include "base/compiler_specific.h"
-#include "base/mac/foundation_util.h"
-#include "base/mac/scoped_cftyperef.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/single_thread_task_runner.h"
-#include "base/strings/sys_string_conversions.h"
-#include "base/values.h"
-
-namespace remoting {
-namespace policy_hack {
-
-// The MacOS version does not watch files because it is accepted
-// practice on the Mac that the user must logout/login for policies to be
-// applied. This will actually pick up policies every
-// |kFallbackReloadDelayMinutes| which is sufficient for right now.
-class PolicyWatcherMac : public PolicyWatcher {
- public:
-  explicit PolicyWatcherMac(
-      scoped_refptr<base::SingleThreadTaskRunner> task_runner)
-    : PolicyWatcher(task_runner) {
-  }
-
-  ~PolicyWatcherMac() override {}
-
- protected:
-  void StartWatchingInternal() override { Reload(); }
-
-  void StopWatchingInternal() override {}
-
-  void Reload() override {
-    DCHECK(OnPolicyWatcherThread());
-    base::DictionaryValue policy;
-
-    CFStringRef policy_bundle_id = CFSTR("com.google.Chrome");
-    if (CFPreferencesAppSynchronize(policy_bundle_id)) {
-      for (base::DictionaryValue::Iterator i(Defaults());
-           !i.IsAtEnd(); i.Advance()) {
-        const std::string& policy_name = i.key();
-        base::ScopedCFTypeRef<CFStringRef> policy_key(
-            base::SysUTF8ToCFStringRef(policy_name));
-
-        if (i.value().GetType() == base::DictionaryValue::TYPE_BOOLEAN) {
-          Boolean valid = false;
-          bool value = CFPreferencesGetAppBooleanValue(policy_key,
-                                                       policy_bundle_id,
-                                                       &valid);
-          if (valid) {
-            policy.SetBoolean(policy_name, value);
-          }
-        }
-
-        if (i.value().GetType() == base::DictionaryValue::TYPE_STRING) {
-          base::ScopedCFTypeRef<CFPropertyListRef> property_list(
-              CFPreferencesCopyAppValue(policy_key, policy_bundle_id));
-          if (property_list.get() != NULL) {
-            CFStringRef policy_value = base::mac::CFCast<CFStringRef>(
-                property_list.get());
-            if (policy_value != NULL) {
-              policy.SetString(policy_name,
-                               base::SysCFStringRefToUTF8(policy_value));
-            }
-          }
-        }
-
-      }
-    }
-
-    // Set policy. Policy must be set (even if it is empty) so that the
-    // default policy is picked up the first time reload is called.
-    UpdatePolicies(&policy);
-
-    // Reschedule task.
-    ScheduleFallbackReloadTask();
-  }
-};
-
-scoped_ptr<PolicyWatcher> PolicyWatcher::Create(
-    policy::PolicyService* policy_service,
-    scoped_refptr<base::SingleThreadTaskRunner> task_runner) {
-  return make_scoped_ptr(new PolicyWatcherMac(task_runner));
-}
-
-}  // namespace policy_hack
-}  // namespace remoting