Make OAuth2TokenService and subclasses take delegate by unique_ptr

google_apis/gaia/oauth2_token_service.h

 // Copyright 2013 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 GOOGLE_APIS_GAIA_OAUTH2_TOKEN_SERVICE_H_
 #define GOOGLE_APIS_GAIA_OAUTH2_TOKEN_SERVICE_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 118 matching lines @@
     // successful completion.
     virtual void OnFetchAccessTokenComplete(const std::string& account_id,
                                             const std::string& consumer_id,
                                             const ScopeSet& scopes,
                                             GoogleServiceAuthError error,
                                             base::Time expiration_time) = 0;
     virtual void OnTokenRemoved(const std::string& account_id,
                                 const ScopeSet& scopes) = 0;
   };
 
-  explicit OAuth2TokenService(OAuth2TokenServiceDelegate* delegate);
+  explicit OAuth2TokenService(
+      std::unique_ptr<OAuth2TokenServiceDelegate> delegate);
   virtual ~OAuth2TokenService();
 
   // Add or remove observers of this token service.
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
   // Add or remove observers of this token service.
   void AddDiagnosticsObserver(DiagnosticsObserver* observer);
   void RemoveDiagnosticsObserver(DiagnosticsObserver* observer);
 
@@ skipping 56 matching lines @@
                                       const std::string& access_token);
 
   void set_max_authorization_token_fetch_retries_for_testing(int max_retries);
   // Returns the current number of pending fetchers matching given params.
   size_t GetNumPendingRequestsForTesting(
       const std::string& client_id,
       const std::string& account_id,
       const ScopeSet& scopes) const;
 
   OAuth2TokenServiceDelegate* GetDelegate();
+  const OAuth2TokenServiceDelegate* GetDelegate() const;
 
  protected:
   // Implements a cancelable |OAuth2TokenService::Request|, which should be
   // operated on the UI thread.
   // TODO(davidroche): move this out of header file.
   class RequestImpl : public base::SupportsWeakPtr<RequestImpl>,
                       public base::NonThreadSafe,
                       public Request {
    public:
     // |consumer| is required to outlive this.
@@ skipping 157 matching lines @@
 
   FRIEND_TEST_ALL_PREFIXES(OAuth2TokenServiceTest, RequestParametersOrderTest);
   FRIEND_TEST_ALL_PREFIXES(OAuth2TokenServiceTest,
                            SameScopesRequestedForDifferentClients);
   FRIEND_TEST_ALL_PREFIXES(OAuth2TokenServiceTest, UpdateClearsCache);
 
   DISALLOW_COPY_AND_ASSIGN(OAuth2TokenService);
 };
 
 #endif  // GOOGLE_APIS_GAIA_OAUTH2_TOKEN_SERVICE_H_