[ContextualSearch] Adds long press promo for Contextual Search.

chrome/android/java/strings/android_chrome_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!-- android_chrome_strings.grd contains strings for Chrome for Android.
 
 FAQ:
   - How do I add, change, or remove a string?
       Just update this file.
   - Translations will happen automatically??
       Yes, indeed. Just add your string before the branch point and
       make the description good.
@@ skipping 362 matching lines @@
       </message>
       <message name="IDS_CONTEXTUAL_SEARCH_SHORT_DESCRIPTION" desc="A promo message shown to users who have Touch to Search enabled to explain the new behavior and provide an option to opt out">
         Touch to Search sends the selected word and the current page as context to Google Search. You can turn it off in <ph name="BEGIN_LINK">&lt;link&gt;</ph>Settings<ph name="END_LINK">&lt;/link&gt;</ph>.
       </message>
       <message name="IDS_CONTEXTUAL_SEARCH_GOT_IT_BUTTON" desc="A button to confirm and dismiss opt out promo">
         Allow
       </message>
       <message name="IDS_CONTEXTUAL_SEARCH_NO_THANKS_BUTTON" desc="A button to confirm and dismiss opt out promo">
         No thanks
       </message>
+      <message name="IDS_CONTEXTUAL_SEARCH_PEEK_PROMO_TEXT" desc="A promotional message introducing the Touch to Search feature">
+        Now you can search with one touch
+      </message>
+      <message name="IDS_CONTEXTUAL_SEARCH_PEEK_PROMO_NEW" desc="A word that gets placed next to the promotional message to highlight the new Touch To Search feature">
+        New
+      </message>
       <message name="IDS_CRASH_DUMP_UPLOAD_TITLE" desc="Title for crash upload upload preference">
         Usage and crash reports
       </message>
       <message name="IDS_CRASH_DUMP_NEVER_UPLOAD" desc="Settings option never to upload crash reports [CHAR-LIMIT=32]">
         Never send
       </message>
       <message name="IDS_CRASH_DUMP_ALWAYS_UPLOAD" desc="Settings option to upload crash reports only anytime (when on Wi-Fi or mobile data) [CHAR-LIMIT=32]">
         Always send
       </message>
       <message name="IDS_CRASH_DUMP_ONLY_WITH_WIFI" desc="Settings option to upload crash reports only over Wi-Fi [CHAR-LIMIT=32]">
@@ skipping 1891 matching lines @@
 
       <!-- Physical Web strings -->
       <message name="IDS_PHYSICAL_WEB_NOTIFICATION_TITLE" desc="Description of quantity of discovered URLs nearby.">
         {NUM_URLS, plural,
          =1 {1 URL nearby}
          other {# URLs nearby}}
       </message>
     </messages>
   </release>
 </grit>