Files app: Add a string for context menu item label to choose OPEN_WITH actions.

Bug: 740821
Change-Id: I4fa17745613ac2c25efe260673dc324cf5f6df3a
Reviewed-on: https://chromium-review.googlesource.com/579249Reviewed-by: Yuki Awano <yawano@chromium.org>
Commit-Queue: Naoki Fukino <fukino@chromium.org>
Cr-Commit-Position: refs/heads/master@{#488193}

chrome/app/chromeos_strings.grdp

@@ -487,7 +487,10 @@ Press any key to continue exploring.
   <message name="IDS_FILE_BROWSER_CUT_BUTTON_LABEL" desc="Context menu item that cuts the currently-selected file(s) to the clipboard.">
     Cut
   </message>
-  <message name="IDS_FILE_BROWSER_MORE_ACTIONS_BUTTON_LABEL" desc="Menu item label, showing dialog to choose extension to open selected files or directories.">
+  <message name="IDS_FILE_BROWSER_OPEN_WITH_BUTTON_LABEL" desc="Menu item label, showing dialog to choose extension to open selected files or directories.">
+    Open with...
+  </message>
+  <message name="IDS_FILE_BROWSER_MORE_ACTIONS_BUTTON_LABEL" desc="Menu item label, showing dialog to choose extension to open/share/pack/etc... selected files or directories.">
     More actions...
   </message>
   <message name="IDS_FILE_BROWSER_OPEN_WITH_VERB_BUTTON_LABEL" desc="Verb that describe the action of opening one or more files or directories with the given extension.">