Add extensions-api for accounts

It's an initial skeleton only at the moment.
Methods for getting an account and starChange / unstarChange are
available which will also be implemented in the upcoming REST client.

Change-Id: I1a8d0cbe9106a1bccdad29cbb1c9a313a844909a

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/api/GerritApi.java

@@ -14,11 +14,13 @@
 
 package com.google.gerrit.extensions.api;
 
+import com.google.gerrit.extensions.api.accounts.Accounts;
 import com.google.gerrit.extensions.api.changes.Changes;
 import com.google.gerrit.extensions.api.projects.Projects;
 import com.google.gerrit.extensions.restapi.NotImplementedException;
 
 public interface GerritApi {
+  public Accounts accounts();
   public Changes changes();
   public Projects projects();
 
@@ -27,6 +29,11 @@ public interface GerritApi {
    * when adding new methods to the interface.
    **/
   public class NotImplemented implements GerritApi {
+    @Override
+    public Accounts accounts() {
+      throw new NotImplementedException();
+    }
+
     @Override
     public Changes changes() {
       throw new NotImplementedException();

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/api/accounts/AccountApi.java

@@ -0,0 +1,47 @@
+// Copyright (C) 2014 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.gerrit.extensions.api.accounts;
+
+import com.google.gerrit.extensions.common.AccountInfo;
+import com.google.gerrit.extensions.restapi.NotImplementedException;
+import com.google.gerrit.extensions.restapi.RestApiException;
+
+public interface AccountApi {
+  AccountInfo get() throws RestApiException;
+
+  void starChange(String id) throws RestApiException;
+  void unstarChange(String id) throws RestApiException;
+
+  /**
+   * A default implementation which allows source compatibility
+   * when adding new methods to the interface.
+   **/
+  public class NotImplemented implements AccountApi {
+    @Override
+    public AccountInfo get() throws RestApiException {
+      throw new NotImplementedException();
+    }
+
+    @Override
+    public void starChange(String id) throws RestApiException {
+      throw new NotImplementedException();
+    }
+
+    @Override
+    public void unstarChange(String id) throws RestApiException {
+      throw new NotImplementedException();
+    }
+  }
+}

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/api/accounts/Accounts.java

@@ -0,0 +1,39 @@
+// Copyright (C) 2014 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.gerrit.extensions.api.accounts;
+
+import com.google.gerrit.extensions.restapi.NotImplementedException;
+import com.google.gerrit.extensions.restapi.RestApiException;
+
+public interface Accounts {
+  AccountApi id(String id) throws RestApiException;
+  AccountApi self() throws RestApiException;
+
+  /**
+   * A default implementation which allows source compatibility
+   * when adding new methods to the interface.
+   **/
+  public class NotImplemented implements Accounts {
+    @Override
+    public AccountApi id(String id) throws RestApiException {
+      throw new NotImplementedException();
+    }
+
+    @Override
+    public AccountApi self() throws RestApiException {
+      throw new NotImplementedException();
+    }
+  }
+}