ChromeOS: enable SystemTimezoneAutomaticDetectionPolicy by default.

chrome/app/chromeos_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- ChromeOS-specific strings (included from generated_resources.grd).
      Everything in this file is wrapped in <if expr="chromeos">. -->
 <grit-part>
   <message name="IDS_EMPTY_STRING" desc="Empty string, exist only to make code generic. No translation required.">
   </message>
   <!-- Idle logout dialog for retail mode -->
   <message name="IDS_IDLE_LOGOUT_TITLE" desc="Dialog title for the idle logout dialog. Used in retail mode only.">
     Are you still there?
   </message>
@@ skipping 2386 matching lines @@
   </message>
   <message name="IDS_OPTIONS_SETTINGS_ACCESSIBILITY_SWITCH_ACCESS_DESCRIPTION" desc="In the settings tab, the text next to the checkbox to enable switch access (for users with limited motor control).">
     Switch access (control the computer with just one or two switches)
   </message>
   <message name="IDS_FLAGS_EXPERIMENTAL_ACCESSIBILITY_FEATURES_NAME" desc="Name of the about:flag option for experimental accessibility features.">
     Experimental acecssibility features
   </message>
   <message name="IDS_FLAGS_EXPERIMENTAL_ACCESSIBILITY_FEATURES_DESCRIPTION" desc="Description of the about:flag option for experimental accessibility features.">
     Enable additional accessibility features in the Settings page.
   </message>
-  <message name="IDS_FLAGS_ENABLE_SYSTEM_TIMEZONE_AUTOMATIC_DETECTION_NAME" desc="Name of the about:flag option for enabling EnableSystemTimezoneAutomaticDetection policy.">
+  <message name="IDS_FLAGS_DISABLE_SYSTEM_TIMEZONE_AUTOMATIC_DETECTION_NAME" desc="Name of the about:flag option for disabling EnableSystemTimezoneAutomaticDetection policy.">
     SystemTimezoneAutomaticDetection policy support
   </message>
-  <message name="IDS_FLAGS_ENABLE_SYSTEM_TIMEZONE_AUTOMATIC_DETECTION_DESCRIPTION" desc="Description of the about:flag option for enabling EnableSystemTimezoneAutomaticDetection policy.">
-    Enable system timezone automatic detection device policy.
+  <message name="IDS_FLAGS_DISABLE_SYSTEM_TIMEZONE_AUTOMATIC_DETECTION_DESCRIPTION" desc="Description of the about:flag option for disabling EnableSystemTimezoneAutomaticDetection policy.">
+    Disable system timezone automatic detection device policy.
   </message>
   <message name="IDS_OPTIONS_SETTINGS_DISPLAY_OPTIONS_BUTTON_LABEL" desc="Label for the button opening display settings tab.">
     Display settings
   </message>
   <message name="IDS_OPTIONS_SETTINGS_DISPLAY_OPTIONS_TAB_TITLE" desc="Title for the display settings tab.">
     Manage displays
   </message>
   <message name="IDS_OPTIONS_SETTINGS_DISPLAY_OPTIONS_OPTIONS" desc="The section title for general options for a selected display.">
     Options:
   </message>
@@ skipping 4205 matching lines @@
   <message name="IDS_ARC_ANDROID_MANAGEMENT_REQUIRED_ERROR" desc="Error message shown when Android management is required for an unmanaged Chrome OS user.">
     Your organization has not enabled Android Apps for your account. Contact your administrator for more information.
   </message>
   <message name="IDS_FLAGS_ENABLE_IME_MENU_NAME" desc="Name of the about: flag for enabling opt-in IME menu.">
     Enable opt-in IME menu
     </message>
   <message name="IDS_FLAGS_ENABLE_IME_MENU_DESCRIPTION" desc="Description of the about: flag for enabling opt-in IME menu.">
     Enable access to the new IME menu in the Language Settings page.
   </message>
 </grit-part>