Show a visual indicator for the progress of auto-click.

chrome/browser/resources/options/browser_options.html

 <div id="settings" class="page" hidden>
   <header>
     <h1 i18n-content="settingsTitle"></h1>
   </header>
   <include src="automatic_settings_reset_banner.html">
 <if expr="chromeos">
   <link rel="import" href="chrome://resources/cr_elements/network/cr_network_icon.html">
   <link rel="import" href="chrome://resources/cr_elements/network/cr_onc_types.html">
   <include src="secondary_user_banner.html">
   <section id="network-section-cros">
@@ skipping 932 matching lines @@
       </div>
       <div class="checkbox">
         <!-- No whitespace between elements. -->
         <input type="checkbox" class="spacer-checkbox"><span
             id="accessibility-autoclick-label"
             i18n-content="accessibilityAutoclickDropdown">
         </span><select id="accessibility-autoclick-dropdown" class="control"
             data-type="number"
             aria-labelledby="accessibility-autoclick-label"
             pref="settings.a11y.autoclick_delay_ms">
-          <option value="200"
+          <!-- i18n values need to be updated as option values are.-->

[jdufault, 2016/06/08 17:50:20]

This is a little confusing because it's not immediately clear that the option
value is mapped to the autoclick delay. How about something along the lines of

  The i18n strings contain the autoclick duration; if the autoclick
  timing gets changed, then the 18n strings also need to be updated.

[sammiequon, 2016/06/09 04:03:46]

Done.

+          <option value="600"
               i18n-content="autoclickDelayExtremelyShort"></option>
-          <option value="400"
+          <option value="800"
               i18n-content="autoclickDelayVeryShort"></option>
-          <option value="600" i18n-content="autoclickDelayShort">
+          <option value="1000" i18n-content="autoclickDelayShort">
           </option>
-          <option value="800" i18n-content="autoclickDelayLong">
+          <option value="2000" i18n-content="autoclickDelayLong">
           </option>
-          <option value="1000"
+          <option value="4000"
               i18n-content="autoclickDelayVeryLong"></option>
         </select>
         <span class="controlled-setting-indicator"
             pref="settings.a11y.autoclick_delay_ms"></span>
       </div>
     </div>
     <div class="option-name" id="accessibility_onscreen_keyboard">
       <div class="checkbox controlled-setting-with-label">
         <label>
           <input pref="settings.a11y.virtual_keyboard" type="checkbox"
@@ skipping 143 matching lines @@
       </button>
     </div>
   </section>
   </div>  <!-- advanced-settings-container -->
   </div>  <!-- advanced-settings -->
   <footer id="advanced-settings-footer">
     <a is="action-link" id="advanced-settings-expander"
         i18n-content="showAdvancedSettings"></a>
   </footer>
 </div>