Add a button to OIB to launch an instant app if it exists.

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 1569 matching lines @@
         <ph name="NAME">%1$s<ex>Google</ex></ph> was added to your Home screen
       </message>
       <message name="IDS_FAIL_TO_INSTALL_WEBAPK" desc="The installation of a WebAPK fails. [CHAR-LIMIT=27]">
         Unable to add
       </message> 
 
       <!-- WebsiteSettingsPopup (PageInfo dialog) -->
       <message name="IDS_PAGE_INFO_SITE_SETTINGS_BUTTON" desc="Text in the button that opens a website's Site Settings from the Page Info dialog.">
         Site Settings
       </message>
+      <message name="IDS_PAGE_INFO_INSTANT_APP_BUTTON" desc="Text in the button that opens an Android Instant app that is associated with the website's URL.">
+        Open Instant App
+      </message>
       <message name="IDS_PAGE_INFO_PERMISSION_ALLOWED" desc="The label used in the Page Info dialog to describe an allowed permission. Eg: Location - Allowed">
         Allowed
       </message>
       <message name="IDS_PAGE_INFO_PERMISSION_BLOCKED" desc="The label used in the Page Info dialog to describe a blocked permission. Eg: Location - Blocked">
         Blocked
       </message>
       <message name="IDS_PAGE_INFO_ANDROID_PERMISSION_BLOCKED" desc="The label used in the Page Info dialog to indicate a permission has been blocked within Android settings">
         Turned off in Android Settings
       </message>
       <message name="IDS_PAGE_INFO_ANDROID_LOCATION_BLOCKED" desc="The label used in the Page Info dialog to indicate that location has been been disabled for the device in Android settings">
@@ skipping 1009 matching lines @@
 
       <message name="IDS_INSTANT_APPS_INFO_BAR_LABEL" desc="A sub-heading describing the item as an Instant App">
         Instant app
       </message>
       <message name="IDS_INSTANT_APPS_OPEN_IN_APP" desc="Button label for the user action that will open an Instant App. [CHAR LIMIT=20]">
         Open app
       </message>
     </messages>
   </release>
 </grit>