Simplify some CloudPrintProxy code.

chrome/browser/chromeos/login/signin/oauth2_login_manager.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_SIGNIN_OAUTH2_LOGIN_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SIGNIN_OAUTH2_LOGIN_MANAGER_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 50 matching lines @@
   };
 
   class Observer {
    public:
     virtual ~Observer() {}
 
     // Raised when merge session state changes.
     virtual void OnSessionRestoreStateChanged(Profile* user_profile,
                                               SessionRestoreState state) {}
 
-    // Raised when a new OAuth2 refresh token is avaialble.
+    // Raised when a new OAuth2 refresh token is available.
     virtual void OnNewRefreshTokenAvaiable(Profile* user_profile) {}
 
     // Raised when session's GAIA credentials (SID+LSID) are available to
     // other signed in services.
     virtual void OnSessionAuthenticated(Profile* user_profile) {}
   };
 
   explicit OAuth2LoginManager(Profile* user_profile);
   ~OAuth2LoginManager() override;
 
@@ skipping 171 matching lines @@
   // TODO(zelidrag|gspencer): Figure out how to get rid of ProfileHelper so we
   // can change the line below to base::ObserverList<Observer, true>.
   base::ObserverList<Observer, false> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(OAuth2LoginManager);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SIGNIN_OAUTH2_LOGIN_MANAGER_H_