Photo Picker dialog: Flesh out the number roll string a bit.

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 2668 matching lines @@
       </message>
       <message name="IDS_ACCESSIBILITY_DRAWER_TOGGLE_BTN_OPEN" desc="Content description for the button to show the navigation drawer.">
         Open navigation drawer
       </message>
       <message name="IDS_ACCESSIBILITY_DRAWER_TOGGLE_BTN_CLOSE" desc="Content description for the button to close the navigation drawer.">
         Close navigation drawer
       </message>
       <message name="IDS_ACCESSIBILITY_TOOLBAR_SCREEN_POSITION" desc="Accessibility announcement to inform users about a toolbar's location.">
         Options available near top of the screen
       </message>
       <message name="IDS_ACCESSIBILITY_SELECTED_ITEMS" desc="Content description for a number indicating how many items are selected. [ICU Syntax]">

[Bernhard Bauer, 2017/07/06 21:08:28]

Nit: This string now isn't really used for accessibility anymore.

         {NUM_SELECTED, plural,
-          =1 {1 item selected}
-          other {# items selected}}
+          =1 {1 selected}
+          other {# selected}}
       </message>
       <message name="IDS_ACCESSIBILITY_SHARE_SELECTED_ITEMS" desc="Content description for the button to share selected items. [ICU Syntax]">
         {NUM_SELECTED, plural,
           =1 {Share 1 selected item}
           other {Share # selected items}}
       </message>
       <message name="IDS_ACCESSIBILITY_REMOVE_SELECTED_ITEMS" desc="Content description for the button to remove selected items. [ICU Syntax]">
         {NUM_SELECTED, plural,
           =1 {Remove 1 selected item}
           other {Remove # selected items}}
@@ skipping 416 matching lines @@
       </message>
       <message name="IDS_BOTTOM_SHEET_HISTORY_TAB" desc="Accessibility string read when the history tab is selected.">
         History tab selected
       </message>
       <message name="IDS_BOTTOM_SHEET_HOME_TAB" desc="Accessibility string read when the home tab is selected.">
         Home tab selected
       </message>
     </messages>
   </release>
 </grit>