Added a timezone policy and pyauto tests for it.

BUG=chromium-os:27206
TEST=See included tests.


Review URL: https://chromiumcodereview.appspot.com/10827050

git-svn-id: http://src.chromium.org/svn/trunk/src/chrome/browser/policy/proto@150536 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
diff --git a/chrome_device_policy.proto b/chrome_device_policy.proto
index 5313c88..10ab32b 100644
--- a/chrome_device_policy.proto
+++ b/chrome_device_policy.proto
@@ -206,6 +206,11 @@
   repeated string start_up_urls = 1;
 }
 
+message SystemTimezoneProto {
+  // Specifies the timezone which is applied if this value is provided. 
+  optional string timezone = 1;
+}
+
 message ChromeDeviceSettingsProto {
   optional DevicePolicyRefreshRateProto device_policy_refresh_rate = 1;
   optional UserWhitelistProto user_whitelist = 2;
@@ -226,4 +231,5 @@
   optional AutoUpdateSettingsProto auto_update_settings = 17;
   optional StartUpUrlsProto start_up_urls = 18;
   optional PinnedAppsProto pinned_apps = 19;
+  optional SystemTimezoneProto system_timezone = 20;
 }