[MD Settings] Only mention the App Launcher on ChromeOS for the "Use a prediction service.." setting

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_CHECK_FOR_UPDATES" desc="The button label to check for updates and apply (download and install) if found">
       Check for updates
     </message>
     <message name="IDS_SETTINGS_ABOUT_PAGE_CURRENT_CHANNEL_STABLE" desc="The stable label in the message about current channel.">
       stable
@@ skipping 817 matching lines @@
     </message>
   </if>
 
   <!-- Privacy Page -->
   <message name="IDS_SETTINGS_PRIVACY" desc="Name of the settings page which allows users to modify privacy and security settings.">
     Privacy and security
   </message>
   <message name="IDS_SETTINGS_LINKDOCTOR_PREF" desc="The documentation string of the 'Use Link Doctor' preference to help with navigation errors.">
     Use a web service to help resolve navigation errors
   </message>
-  <message name="IDS_SETTINGS_SUGGEST_PREF" desc="The documentation string of the 'Use Suggest' preference">
-    Use a prediction service to help complete searches and URLs typed in the address bar or the app launcher search box
-  </message>
+  <if expr="chromeos">
+    <message name="IDS_SETTINGS_SUGGEST_PREF" desc="The documentation string of the 'Use Suggest' preference">
+      Use a prediction service to help complete searches and URLs typed in the address bar or the app launcher search box
+    </message>
+  </if>
+  <if expr="not chromeos">
+    <message name="IDS_SETTINGS_SUGGEST_PREF" desc="The documentation string of the 'Use Suggest' preference">
+      Use a prediction service to help complete searches and URLs typed in the address bar
+    </message>
+  </if>
   <message name="IDS_SETTINGS_NETWORK_PREDICTION_ENABLED_DESCRIPTION" desc="In the advanced options tab, the text next to the checkbox that enables prediction of network actions.  Actions include browser-initiated DNS prefetching, TCP and SSL preconnection, and prerendering of webpages.">
     Use a prediction service to load pages more quickly
   </message>
   <message name="IDS_SETTINGS_SAFEBROWSING_ENABLEPROTECTION" desc="The label of the 'Enable phishing and malware protection' checkbox">
     Enable phishing and malware protection
   </message>
   <message name="IDS_SETTINGS_SAFEBROWSING_ENABLE_EXTENDED_REPORTING" desc="Checkbox label: should Chrome upload information about suspicious downloads and websites to Safe Browsing">
     Automatically report details of possible security incidents to Google
   </message>
   <message name="IDS_SETTINGS_SPELLING_PREF" desc="The documentation string of the 'Use Spelling' preference">
@@ skipping 782 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>