[Cleanup] Move the Easy Unlock metrics files out of the chromeos directory.

chrome/browser/signin/easy_unlock_metrics.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_EASY_UNLOCK_EASY_UNLOCK_METRICS_H_
-#define CHROME_BROWSER_CHROMEOS_LOGIN_EASY_UNLOCK_EASY_UNLOCK_METRICS_H_
-
-namespace chromeos {
+#ifndef CHROME_BROWSER_SIGNIN_EASY_UNLOCK_METRICS_H_
+#define CHROME_BROWSER_SIGNIN_EASY_UNLOCK_METRICS_H_
 
 // Tracking login events for Easy unlock metrics.
 // This enum is used to define the buckets for an enumerated UMA histogram.
 // Hence,
 //   (a) existing enumerated constants should never be deleted or reordered, and
 //   (b) new constants should only be appended at the end of the enumeration.
 enum EasyUnlockLoginEvent {
   // User is successfully authenticated using Easy Sign-in.
   EASY_SIGN_IN_SUCCESS = 0,
   // Easy sign-in failed to authenticate the user.
@@ skipping 17 matching lines @@
   PASSWORD_SIGN_IN_PHONE_NOT_AUTHENTICATED = 9,
   // Password is used for sign-in because phone is locked.
   PASSWORD_SIGN_IN_PHONE_LOCKED = 10,
   // Password is used for sign-in because phone does not have lock screen.
   PASSWORD_SIGN_IN_PHONE_NOT_LOCKABLE = 11,
   // Password is used for sign-in because phone is not close enough (roughly,
   // at least 30 feet away).
   PASSWORD_SIGN_IN_RSSI_TOO_LOW = 12,
   // Password is used for sign-in because phone is not supported.
   PASSWORD_SIGN_IN_PHONE_UNSUPPORTED = 13,
-  // Password is used for sign-in because user types in passowrd. This is
+  // Password is used for sign-in because user types in password. This is
   // unlikely to happen though.
   PASSWORD_SIGN_IN_WITH_AUTHENTICATED_PHONE = 14,
   // Password is used for sign-in because phone is not right next to the
   // Chromebook.
   PASSWORD_SIGN_IN_TX_POWER_TOO_HIGH = 15,
   // Password is used for sign-in because Easy sign-in failed.
   PASSWORD_SIGN_IN_LOGIN_FAILED = 16,
   // Password is used for sign-in because pairing data is changed for a "new"
   // Chromebook (where there was no previous pairing data)..
   PASSWORD_SIGN_IN_PAIRING_ADDED = 17,
   // Password is used for sign-in because there is no screenlock state handler.
   // Most likely because EasyUnlock is disabled, e.g. Bluetooth adapter not
   // ready.
   PASSWORD_SIGN_IN_NO_SCREENLOCK_STATE_HANDLER = 18,
   // Password is used for sign-in because the phone is (a) locked, and (b) not
   // right next to the Chromebook.
   PASSWORD_SIGN_IN_PHONE_LOCKED_AND_TX_POWER_TOO_HIGH = 19,
 
-  EASY_SIGN_IN_LOGIN_EVENT_COUNT  // Must be the last.
+  EASY_SIGN_IN_LOGIN_EVENT_COUNT  // Must be the last entry.
 };
 
 void RecordEasyUnlockLoginEvent(EasyUnlockLoginEvent event);
 
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_EASY_UNLOCK_EASY_UNLOCK_METRICS_H_
+#endif  // CHROME_BROWSER_SIGNIN_EASY_UNLOCK_METRICS_H_