Move OAuth2LoginAuthenticationProvider into userinfo package

Fix package tangles. OAuth2LoginAuthenticationProvider requires
OAuth2UserService which is in a child package. We should move
OAuth2LoginAuthenticationProvider to the same package.

Issue: gh-4614

config/src/main/java/org/springframework/security/config/annotation/web/configurers/oauth2/client/OAuth2LoginConfigurer.java

@@ -23,7 +23,7 @@ import org.springframework.security.core.authority.mapping.GrantedAuthoritiesMap
 import org.springframework.security.oauth2.client.authentication.AuthorizationCodeAuthenticationToken;
 import org.springframework.security.oauth2.client.authentication.AuthorizationGrantTokenExchanger;
 import org.springframework.security.oauth2.client.authentication.NimbusAuthorizationCodeTokenExchanger;
-import org.springframework.security.oauth2.client.authentication.OAuth2LoginAuthenticationProvider;
+import org.springframework.security.oauth2.client.authentication.userinfo.OAuth2LoginAuthenticationProvider;
 import org.springframework.security.oauth2.client.authentication.jwt.JwtDecoderRegistry;
 import org.springframework.security.oauth2.client.authentication.jwt.NimbusJwtDecoderRegistry;
 import org.springframework.security.oauth2.client.authentication.userinfo.CustomUserTypesOAuth2UserService;
@@ -47,7 +47,6 @@ import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
 import org.springframework.security.web.util.matcher.RequestMatcher;
 import org.springframework.util.Assert;
 
-import java.net.URI;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/authentication/OAuth2LoginAuthenticationProvider.java → oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/authentication/userinfo/OAuth2LoginAuthenticationProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2017 the original author or authors.
+ * Copyright 2002-2017 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -13,14 +13,18 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.springframework.security.oauth2.client.authentication;
+package org.springframework.security.oauth2.client.authentication.userinfo;
 
 import org.springframework.security.authentication.AuthenticationProvider;
 import org.springframework.security.core.Authentication;
 import org.springframework.security.core.AuthenticationException;
 import org.springframework.security.core.GrantedAuthority;
 import org.springframework.security.core.authority.mapping.GrantedAuthoritiesMapper;
-import org.springframework.security.oauth2.client.authentication.userinfo.OAuth2UserService;
+import org.springframework.security.oauth2.client.authentication.AuthorizationCodeAuthenticationToken;
+import org.springframework.security.oauth2.client.authentication.AuthorizationGrantTokenExchanger;
+import org.springframework.security.oauth2.client.authentication.AuthorizedClient;
+import org.springframework.security.oauth2.client.authentication.OAuth2AuthenticationException;
+import org.springframework.security.oauth2.client.authentication.OAuth2AuthenticationToken;
 import org.springframework.security.oauth2.core.AccessToken;
 import org.springframework.security.oauth2.core.OAuth2Error;
 import org.springframework.security.oauth2.core.endpoint.AuthorizationRequest;

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/web/OAuth2LoginAuthenticationFilter.java

@@ -20,7 +20,7 @@ import org.springframework.security.core.Authentication;
 import org.springframework.security.core.AuthenticationException;
 import org.springframework.security.oauth2.client.authentication.AuthorizationCodeAuthenticationToken;
 import org.springframework.security.oauth2.client.authentication.OAuth2AuthenticationException;
-import org.springframework.security.oauth2.client.authentication.OAuth2LoginAuthenticationProvider;
+import org.springframework.security.oauth2.client.authentication.userinfo.OAuth2LoginAuthenticationProvider;
 import org.springframework.security.oauth2.client.authentication.OAuth2AuthenticationToken;
 import org.springframework.security.oauth2.client.registration.ClientRegistration;
 import org.springframework.security.oauth2.client.registration.ClientRegistrationRepository;