Autoclick on md-settings is synced with autoclick on settings.

chrome/app/settings_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Settings-specific strings (included from generated_resources.grd). -->
 <grit-part>
   <!-- About Page -->
   <if expr="chromeos">
     <message name="IDS_SETTINGS_ABOUT_PAGE_DETAILED_BUILD_INFO" desc="Label describing the section that shows detailed information about the current Chrome build.">
       Detailed build information
     </message>
     <message name="IDS_SETTINGS_ABOUT_PAGE_ARC_VERSION" desc="Label for ARC version">
       ARC Version
@@ skipping 118 matching lines @@
     <message name="IDS_SETTINGS_TAP_DRAGGING_LABEL" desc="Label for checkbox which enables tap dragging.">
       Enable tap dragging
     </message>
     <message name="IDS_SETTINGS_CLICK_ON_STOP_LABEL" desc="Label for checkbox which enables automatically clicking when the mouse pointer stops.">
       Automatically click when the mouse pointer stops
     </message>
     <message name="IDS_SETTINGS_DELAY_BEFORE_CLICK_LABEL" desc="Label for dropdown menu which contains various time delays for clicks.">
       Delay before click:
     </message>
     <message name="IDS_SETTINGS_DELAY_BEFORE_CLICK_EXTREMELY_SHORT" desc="Description of an extremely short delay before clicks.">
-      extremely short
+      extremely short (600ms)

[michaelpg, 2016/07/16 08:36:27]

Did you check with tbuckley@ or bettes@ that we should include these numbers in
MD Settings?

[Dan Beam, 2016/07/18 19:44:36]

i think they're just updating based on changes to other code:
https://codereview.chromium.org/2016073004

though we should possibly be doing a <ph> in both cases (ph = placeholder)

[michaelpg, 2016/07/18 20:45:02]

Got it. Thanks!

[sammiequon, 2016/07/20 17:19:31]

Just waiting for a reply now.

[michaelpg, 2016/07/20 19:53:37]

well, feel free to land as is. Is there an open bug where my comment would be
appropriate? https://bugs.chromium.org/p/chromium/issues/detail?id=610476#c10

     </message>
     <message name="IDS_SETTINGS_DELAY_BEFORE_CLICK_VERY_SHORT" desc="Description of a very short delay before clicks.">
-      very short
+      very short (800ms)
     </message>
     <message name="IDS_SETTINGS_DELAY_BEFORE_CLICK_SHORT" desc="Description of a short delay before clicks.">
-      short
+      short (1000ms)
     </message>
     <message name="IDS_SETTINGS_DELAY_BEFORE_CLICK_LONG" desc="Description of a long delay before clicks.">
-      long
+      long (2000ms)
     </message>
     <message name="IDS_SETTINGS_DELAY_BEFORE_CLICK_VERY_LONG" desc="Description of a very long delay before clicks.">
-      very long
+      very long (4000ms)
     </message>
     <message name="IDS_SETTINGS_ON_SCREEN_KEYBOARD_LABEL" desc="Label for checkbox which enables an on-screen keyboard.">
       Enable on-screen keyboard
     </message>
     <message name="IDS_SETTINGS_MONO_AUDIO_LABEL" desc="Label for checkbox which enables mono audio output.">
       Play the same audio through all speakers (mono audio)
     </message>
     <message name="IDS_SETTINGS_ACCESSIBILITY_EXPLANATION" desc="Informational message at the top of the accessibility section of the settings page about enabling additional accessibility-related features.">
       Enable accessibility features to make your device easier to use.
     </message>
@@ skipping 1549 matching lines @@
       System
     </message>
     <message name="IDS_SETTINGS_SYSTEM_HARDWARE_ACCELERATION_LABEL" desc="Label for the checkbox that forces Chrome to render via hardware acceleration (GPU) when available.">
       Use hardware acceleration when available
     </message>
     <message name="IDS_SETTINGS_SYSTEM_PROXY_SETTINGS_BUTTON" desc="Text for the button that changes a user's network proxy settings.">
       Change proxy settings
     </message>
   </if>
 </grit-part>