[Win] Add option to reauthenticate the OS user before revealing passwords.

chrome/app/google_chrome_strings.grd

Index: chrome/app/google_chrome_strings.grd
diff --git a/chrome/app/google_chrome_strings.grd b/chrome/app/google_chrome_strings.grd
index 68e511b9553726f5f8fdf0d477dac6d1ccdd95c6..0474d461395abaa09a50e358e74662474a6b193f 100644
--- a/chrome/app/google_chrome_strings.grd
+++ b/chrome/app/google_chrome_strings.grd
@@ -425,6 +425,11 @@ Google Chrome is unable to recover your settings.
           Google Chrome is trying to show passwords.
         </message>
       </if>
+      <if expr="is_win">
+        <message name="IDS_PASSWORDS_PAGE_AUTHENTICATION_PROMPT" desc="Text for the dialog box that prompts the user for their OS account password before revealing plaintext passwords on the password page.">
+          Google Chrome is trying to show passwords. Type your Windows password to allow this.
+        </message>
+      </if>
       <message name="IDS_CANT_WRITE_USER_DIRECTORY_EXIT_BUTTON" desc="Text on button of dialog that closes Chrome if we can't create a directory for this user.">
         Exit Chrome
       </message>