UMA for pin unlock success/failure.

chrome/browser/chromeos/login/lock/screen_locker.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_LOCK_SCREEN_LOCKER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_LOCK_SCREEN_LOCKER_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 31 matching lines @@
 class ScreenLockerTester;
 class ScreenLockerViewsTester;
 class WebUIScreenLockerTester;
 }  // namespace test
 
 // ScreenLocker creates a ScreenLockerDelegate which will display the lock UI.
 // As well, it takes care of authenticating the user and managing a global
 // instance of itself which will be deleted when the system is unlocked.
 class ScreenLocker : public AuthStatusConsumer {
  public:
+  enum UnlockSuccess {
+    AUTH_SUCCESS_PASSWORD = 0,
+    AUTH_SUCCESS_PIN,
+    AUTH_SUCCESS_COUNT
+  };
+
+  enum UnlockFailure {
+    AUTH_FAILURE_PASSWORD = 0,
+    AUTH_FAILURE_PIN,
+    AUTH_FAILURE_COUNT
+  };
+
   explicit ScreenLocker(const user_manager::UserList& users);
 
   // Returns the default instance if it has been created.
   static ScreenLocker* default_screen_locker() {
     return screen_locker_;
   }
 
   bool locked() const { return locked_; }
 
   // Initialize and show the screen locker.
@@ skipping 133 matching lines @@
   scoped_refptr<input_method::InputMethodManager::State> saved_ime_state_;
 
   base::WeakPtrFactory<ScreenLocker> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenLocker);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_LOCK_SCREEN_LOCKER_H_