ChromeOS: Add SystemTimezoneAutomaticDetection policy.

chrome/browser/chromeos/policy/device_policy_decoder_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/device_policy_decoder_chromeos.h"
 
 #include <limits>
 #include <string>
 
 #include "base/callback.h"
@@ skipping 864 matching lines @@
       }
       if (entry->has_product_id()) {
         ids->SetString("pid", base::StringPrintf("%04X", entry->product_id()));
       }
       whitelist->Append(ids);
     }
     policies->Set(key::kUsbDetachableWhitelist, POLICY_LEVEL_MANDATORY,
                   POLICY_SCOPE_MACHINE, POLICY_SOURCE_CLOUD, whitelist,
                   nullptr);
   }
+
+  if (policy.has_system_timezone_automatic_detection() &&
+      policy.system_timezone_automatic_detection()
+          .has_timezone_detection_type()) {
+    policies->Set(
+        key::kSystemTimezoneAutomaticDetection, POLICY_LEVEL_MANDATORY,
+        POLICY_SCOPE_MACHINE, POLICY_SOURCE_CLOUD,
+        new base::FundamentalValue(policy.system_timezone_automatic_detection()

[cschuet (SLOW), 2016/03/30 13:08:48]

Use DecodeIntegerValue() which performs range checks as well.

[Alexander Alekseev, 2016/03/31 06:51:49]

Done.

+                                       .timezone_detection_type()),
+        nullptr);
+  }
 }
 
 }  // namespace
 
 void DecodeDevicePolicy(const em::ChromeDeviceSettingsProto& policy,
                         PolicyMap* policies) {
   // Decode the various groups of policies.
   DecodeLoginPolicies(policy, policies);
   DecodeNetworkPolicies(policy, policies);
   DecodeReportingPolicies(policy, policies);
   DecodeAutoUpdatePolicies(policy, policies);
   DecodeAccessibilityPolicies(policy, policies);
   DecodeGenericPolicies(policy, policies);
 }
 
 }  // namespace policy