mediaview: Add strings for media views.

chrome/app/chromeos_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Chrome OS-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>
   <!-- Idle logout dialog for retail mode -->
   <message name="IDS_IDLE_LOGOUT_TITLE" desc="Dialog title for the idle logout dialog. Used in retail mode only.">
     Are you still there?
   </message>
@@ skipping 97 matching lines @@
   </message>
   <message name="IDS_FILE_BROWSER_DRIVE_RECENT_COLLECTION_LABEL" desc="A label for the 'Recent' collection of Google Drive.">
     Recent
   </message>
   <message name="IDS_FILE_BROWSER_DRIVE_OFFLINE_COLLECTION_LABEL" desc="A label for the 'Offline' collection of Google Drive.">
     Offline
   </message>
   <message name="IDS_FILE_BROWSER_DOWNLOADS_DIRECTORY_LABEL" desc="Downloads local directory label.">
     Downloads
   </message>
+  <message name="IDS_FILE_BROWSER_MEDIA_VIEW_IMAGES_ROOT_LABEL" desc="A label for the 'Images' root of media views.">
+    Images
+  </message>
+  <message name="IDS_FILE_BROWSER_MEDIA_VIEW_VIDEOS_ROOT_LABEL" desc="A label for the 'Videos' root of media views.">
+    Videos
+  </message>
+  <message name="IDS_FILE_BROWSER_MEDIA_VIEW_AUDIO_ROOT_LABEL" desc="A label for the 'Audio' root of media views.">
+    Audio
+  </message>
   <message name="IDS_FILE_BROWSER_DOWNLOADS_DIRECTORY_WARNING" desc="Warning displayed to user when viewing downloads folder.">
     <ph name="BEGIN_BOLD">&lt;strong&gt;</ph>Caution:<ph name="END_BOLD">&lt;/strong&gt;</ph>  These files are temporary and may be automatically deleted to free up disk space.  <ph name="BEGIN_LINK">&lt;a href="javascript://"&gt;</ph>Learn More<ph name="END_LINK">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph>
   </message>
   <message name="IDS_FILE_BROWSER_NAME_COLUMN_LABEL" desc="Name column label.">
     Name
   </message>
   <message name="IDS_FILE_BROWSER_SIZE_COLUMN_LABEL" desc="Size column label.">
     Size
   </message>
 
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   </message>
   <message name="IDS_REQUEST_PIN_DIALOG_PIN" desc="The Provider Identification Number abbreviation">
     PIN
   </message>
   <message name="IDS_REQUEST_PIN_DIALOG_PUK" desc="The Personal Unlocking Key (as used in mobile phones) abbreviation">
     PUK
   </message>
 
 </grit-part>