Upstream PO2TS_IOS unit test.

components/signin/ios/browser/profile_oauth2_token_service_ios.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 COMPONENTS_SIGNIN_IOS_BROWSER_PROFILE_OAUTH2_TOKEN_SERVICE_IOS_H_
 #define COMPONENTS_SIGNIN_IOS_BROWSER_PROFILE_OAUTH2_TOKEN_SERVICE_IOS_H_
 
 #include <string>
 
 #include "base/threading/thread_checker.h"
 #include "components/signin/core/browser/mutable_profile_oauth2_token_service.h"
 
 class OAuth2AccessTokenFetcher;
 
 namespace ios{
 class ProfileOAuth2TokenServiceIOSProvider;
 }
 
-// A specialization of ProfileOAuth2TokenService for OS_IOS. It fetches access
-// tokens from the SSOAuth library if the user is signed in using shared
-// authentication or defaults to the parent class
-// |MutableProfileOAuth2TokenService| for pre-SSO signed in users.
+// A specialization of ProfileOAuth2TokenService that will be returned by
+// ProfileOAuth2TokenServiceFactory for OS_IOS when iOS authentication service
+// is used to lookup OAuth2 tokens.
 //
 // See |ProfileOAuth2TokenService| for usage details.
+//
+// Note: Requests should be started from the UI thread. To start a
+// request from aother thread, please use ProfileOAuth2TokenServiceRequest.
 class ProfileOAuth2TokenServiceIOS : public MutableProfileOAuth2TokenService {
  public:
+  ProfileOAuth2TokenServiceIOS();
   virtual ~ProfileOAuth2TokenServiceIOS();
 
   // KeyedService
   virtual void Shutdown() OVERRIDE;
 
   // OAuth2TokenService
   virtual bool RefreshTokenIsAvailable(
       const std::string& account_id) const OVERRIDE;
 
   virtual void InvalidateOAuth2Token(const std::string& account_id,
@@ skipping 40 matching lines @@
   void SetUseLegacyTokenServiceForTesting(bool use_legacy_token_service);
 
   // Revokes the OAuth2 refresh tokens for all accounts from the parent
   // |MutableProfileOAuth2TokenService|.
   //
   // Note: This method should only be called if the legacy pre-SSOAuth token
   // service is used.
   void ForceInvalidGrantResponses();
 
  protected:
-  friend class ProfileOAuth2TokenServiceFactory;
-
-  ProfileOAuth2TokenServiceIOS();
-
   virtual OAuth2AccessTokenFetcher* CreateAccessTokenFetcher(
       const std::string& account_id,
       net::URLRequestContextGetter* getter,
       OAuth2AccessTokenConsumer* consumer) OVERRIDE;
 
   // Protected and virtual to be overriden by fake for testing.
 
   // Adds |account_id| to |accounts_| if it does not exist or udpates
   // the auth error state of |account_id| if it exists. Fires
   // |OnRefreshTokenAvailable| if the account info is updated.
@@ skipping 53 matching lines @@
   //
   // If |use_legacy_token_service_| is true, then this
   // |ProfileOAuth2TokenServiceIOS| delegates all calls to the parent
   // |MutableProfileOAuth2TokenService|.
   bool use_legacy_token_service_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileOAuth2TokenServiceIOS);
 };
 
 #endif  // COMPONENTS_SIGNIN_IOS_BROWSER_PROFILE_OAUTH2_TOKEN_SERVICE_IOS_H_