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

chrome/browser/password_manager/password_manager_util.h

Index: chrome/browser/password_manager/password_manager_util.h
diff --git a/chrome/browser/password_manager/password_manager_util.h b/chrome/browser/password_manager/password_manager_util.h
index 4c6441d6c438748526a7111830fb3c1195e206c1..8e2c13dc33a4cc35eb27c864689460bb2e9187d6 100644
--- a/chrome/browser/password_manager/password_manager_util.h
+++ b/chrome/browser/password_manager/password_manager_util.h
@@ -5,13 +5,19 @@
 #ifndef CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_MANAGER_UTIL_H_
 #define CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_MANAGER_UTIL_H_
 
+#include "base/basictypes.h"
+
+namespace content {
+class WebContents;
+}
+
 namespace password_manager_util {
 
 // Attempts to (re-)authenticate the user of the OS account. Returns true if
 // the user was successfully authenticated, or if authentication was not
 // possible. On platforms where reauthentication is not possible or does not
 // make sense, the default implementation always returns true.
-bool AuthenticateUser();
+bool AuthenticateUser(content::WebContents* web_contents);
 
 }  // namespace password_manager_util