Add policies to control power management on the Chrome OS login screen

chrome/browser/chromeos/policy/configuration_policy_handler_chromeos.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 "chrome/browser/chromeos/policy/configuration_policy_handler_chromeos.h"
 
 #include <string>
 
 #include "ash/magnifier/magnifier_constants.h"
 #include "base/callback.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_value_map.h"
 #include "base/strings/string_util.h"
 #include "base/values.h"
+#include "chrome/browser/chromeos/policy/login_screen_power_management_policy.h"
 #include "chrome/browser/policy/external_data_fetcher.h"
 #include "chrome/browser/policy/policy_error_map.h"
 #include "chrome/browser/policy/policy_map.h"
 #include "chrome/browser/ui/ash/chrome_launcher_prefs.h"
 #include "chrome/common/pref_names.h"
 #include "chromeos/network/onc/onc_constants.h"
 #include "chromeos/network/onc/onc_signature.h"
 #include "chromeos/network/onc/onc_utils.h"
 #include "chromeos/network/onc/onc_validator.h"
 #include "grit/generated_resources.h"
@@ skipping 158 matching lines @@
   const base::Value* value = policies.GetValue(policy_name());
   int value_in_range;
   if (value && EnsureInRange(value, &value_in_range, NULL)) {
     prefs->SetValue(prefs::kScreenMagnifierEnabled,
                     base::Value::CreateBooleanValue(value_in_range != 0));
     prefs->SetValue(prefs::kScreenMagnifierType,
                     base::Value::CreateIntegerValue(value_in_range));
   }
 }
 
+LoginScreenPowerManagementPolicyHandler::
+    LoginScreenPowerManagementPolicyHandler()
+    : TypeCheckingPolicyHandler(key::kDeviceLoginScreenPowerManagement,
+                                base::Value::TYPE_STRING) {
+}
+
+LoginScreenPowerManagementPolicyHandler::
+    ~LoginScreenPowerManagementPolicyHandler() {
+}
+
+bool LoginScreenPowerManagementPolicyHandler::CheckPolicySettings(
+    const PolicyMap& policies,
+    PolicyErrorMap* errors) {
+  const base::Value* value;
+  if (!CheckAndGetValue(policies, errors, &value))
+    return false;
+
+  if (!value)
+    return true;
+
+  std::string json;
+  value->GetAsString(&json);
+  return LoginScreenPowerManagementPolicy().Init(json, errors);
+}
+
+void LoginScreenPowerManagementPolicyHandler::ApplyPolicySettings(
+    const PolicyMap& policies,
+    PrefValueMap* prefs) {
+}
+
 }  // namespace policy