Revert "ChromeOS: Add SystemTimezoneAutomaticDetection policy."

chrome/browser/chromeos/system/timezone_resolver_manager.h

Index: chrome/browser/chromeos/system/timezone_resolver_manager.h
diff --git a/chrome/browser/chromeos/system/timezone_resolver_manager.h b/chrome/browser/chromeos/system/timezone_resolver_manager.h
index f900c0504d170772dfee5acf9c51e1a887fb0f52..db5fc77918c353d8ec3499c9d318afede0ddcdbe 100644
--- a/chrome/browser/chromeos/system/timezone_resolver_manager.h
+++ b/chrome/browser/chromeos/system/timezone_resolver_manager.h
@@ -32,9 +32,6 @@ class TimeZoneResolverManager : public TimeZoneResolver::Delegate {
   // system timezone (preferences might have changed since request was started).
   bool ShouldApplyResolvedTimezone();
 
-  // Returns the result of the provate call for tests.
-  bool TimeZoneResolverShouldBeRunningForTests();
-
  private:
   // Returns true if TimeZoneResolver should be running and taking in account
   // all configuration data.
@@ -43,9 +40,6 @@ class TimeZoneResolverManager : public TimeZoneResolver::Delegate {
   // This is non-null only after user logs in.
   PrefService* primary_user_prefs_;
 
-  // This is used to subscribe to policy preference.
-  PrefChangeRegistrar local_state_pref_change_registrar_;
-
   DISALLOW_COPY_AND_ASSIGN(TimeZoneResolverManager);
 };