Add a menu item for configuring configurable providers.

chrome/app/chromeos_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- ChromeOS-specific strings (included from generated_resources.grd).
      Everything in this file is wrapped in <if expr="chromeos">. -->
 <grit-part>
   <message name="IDS_EMPTY_STRING" desc="Empty string, exist only to make code generic. No translation required.">
   </message>
   <message name="IDS_CHROMEBOOK" desc="The localized name for Chromebook.">
     Chromebook
   </message>
   <message name="IDS_CHROMEBOX" desc="The localized name for Chromebox">
@@ skipping 226 matching lines @@
    <ph name="BEGIN_BOLD">&lt;b&gt;</ph>Don't remove your device just yet!<ph name="END_BOLD">&lt;/b&gt;</ph>
    <ph name="LINE_BREAKS">&lt;br/&gt;&lt;br/&gt;</ph>
    Removing your device while it is in use may cause data loss.  Please wait until the operation is over, then eject the device using the Files app.
   </message>
   <message name="IDS_FILE_BROWSER_MOUNT_ARCHIVE" desc="Title of the action for mounting an archive file to work with its contents.">
     Open
   </message>
   <message name="IDS_FILE_BROWSER_FORMAT_DEVICE_BUTTON_LABEL" desc="Title of the action for formatting removable device.">
     Format device
   </message>
+  <message name="IDS_FILE_BROWSER_CONFIGURE_VOLUME_BUTTON_LABEL" desc="Title of the action for configuring the selected volume.">
+    Configure
+  </message>
   <message name="IDS_FILE_BROWSER_UNMOUNT_DEVICE_BUTTON_LABEL" desc="Title of the action for unmounting removable device.">
     Eject device
   </message>
   <message name="IDS_FILE_BROWSER_CLOSE_VOLUME_BUTTON_LABEL" desc="Title of the action for closing either an archive volume or a volume provided by an extension.">
     Close
   </message>
   <message name="IDS_FILE_BROWSER_ADD_NEW_SERVICES_BUTTON_LABEL" desc="Title of the button in the left nav to add new services (file systems) to Files app.">
     Add new services
   </message>
   <message name="IDS_FILE_BROWSER_INSTALL_NEW_EXTENSION_LABEL" desc="Title of the menu item for installing new extensions from the web store.">
@@ skipping 6097 matching lines @@
     An app that shows a filtered list of extensions from Chrome Web Store. Extensions in the list can be installed directly from the app.
   </message>
   <message name="IDS_WEBSTORE_WIDGET_TITLE_PRINTER_PROVIDERS" desc="Title for Chrome Web Store Gallery Widget which lists all print driver apps from Chrome Web Store for a specific printer.">
     Select a printer driver app
   </message>
   <message name="IDS_WEBSTORE_WIDGET_DEFAULT_ERROR" desc="Default message shown when Chrome Web Store Widget app window content fails to load (e.g. if it fails to load Chrome Web Store Gallery in a webview).">
     Could not connect to the Chrome Web Store.
   </message>
 
 </grit-part>