ChromeOS: removed outdated --disable-timezone-tracking-option switch.

chrome/browser/resources/settings/date_time_page/date_time_page.js

Index: chrome/browser/resources/settings/date_time_page/date_time_page.js
diff --git a/chrome/browser/resources/settings/date_time_page/date_time_page.js b/chrome/browser/resources/settings/date_time_page/date_time_page.js
index 75ad8ebb65530d44657a896b73af1d28a4126305..0b7749907825c1b0ed2a31986886ea61f7f30a9c 100644
--- a/chrome/browser/resources/settings/date_time_page/date_time_page.js
+++ b/chrome/browser/resources/settings/date_time_page/date_time_page.js
@@ -74,20 +74,6 @@ Polymer({
             null;
       },
     },
-
-    /**
-     * Hides the time zone auto-detection feature when the
-     * --disable-timezone-tracking-option flag is set.
-     * @private
-     */
-    hideTimeZoneDetection_: {
-      type: Boolean,
-      value: function() {
-        return loadTimeData.valueExists('hideTimeZoneDetection') &&
-               loadTimeData.getBoolean('hideTimeZoneDetection');
-      },
-      readOnly: true,
-    },
   },
 
   observers: [
@@ -112,10 +98,6 @@ Polymer({
                                    systemTimeZoneManaged,
                                    systemTimeZoneDetectionManaged,
                                    systemTimeZoneDetectionPolicyValue) {
-    // Do nothing if the feature is disabled by a flag.
-    if (this.hideTimeZoneDetection_)
-      return;
-
     var checkbox = this.$.timeZoneDetectionCheckbox;
 
     // Time zone auto-detection is disabled when the time zone is managed.