Adding a format device button to UI.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index b93be55362b8ec64317fa7c5be3a481ad73478c5..cb9c8c029d6eb4b7b8246b16e572cb1289a906e6 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -8950,6 +8950,9 @@ Keep your key file in a safe place. You will need it to create new versions of y
       <message name="IDS_FILE_BROWSER_UNMOUNT_ARCHIVE" desc="Title of the action for unmounting the archive file.">
         Close archive
       </message>
+      <message name="IDS_FILE_BROWSER_FORMAT_DEVICE" desc="Title of the action for formatting removable device.">
+        Format device
+      </message>
 
       <message name="IDS_FILE_BROWSER_CONFIRM_OVERWRITE_FILE" desc="Asks the user if they are sure they want to overwrite an existing file with another one.">
         A file named "$1" already exists. Do you want to replace it?