DeleteBranches: Split static Input class out to extension API

Change-Id: I359b6a7827d81c3a87900a5d6680d1df5d4e9ba6

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

@@ -0,0 +1,21 @@
+// Copyright (C) 2016 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.projects;
+
+import java.util.List;
+
+public class DeleteBranchesInput {
+  public List<String> branches;
+}

gerrit-server/src/main/java/com/google/gerrit/server/project/DeleteBranches.java

@@ -18,6 +18,7 @@ import static java.lang.String.format;
 
 import com.google.common.collect.Lists;
 import com.google.gerrit.common.ChangeHooks;
+import com.google.gerrit.extensions.api.projects.DeleteBranchesInput;
 import com.google.gerrit.extensions.restapi.ResourceConflictException;
 import com.google.gerrit.extensions.restapi.Response;
 import com.google.gerrit.extensions.restapi.RestModifyView;
@@ -25,7 +26,6 @@ import com.google.gerrit.reviewdb.client.Branch;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.extensions.events.GitReferenceUpdated;
 import com.google.gerrit.server.git.GitRepositoryManager;
-import com.google.gerrit.server.project.DeleteBranches.Input;
 import com.google.gerrit.server.query.change.InternalChangeQuery;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
@@ -44,26 +44,11 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
-import java.util.List;
 
 @Singleton
-class DeleteBranches implements RestModifyView<ProjectResource, Input> {
+class DeleteBranches implements RestModifyView<ProjectResource, DeleteBranchesInput> {
   private static final Logger log = LoggerFactory.getLogger(DeleteBranches.class);
 
-  static class Input {
-    List<String> branches;
-
-    static Input init(Input in) {
-      if (in == null) {
-        in = new Input();
-      }
-      if (in.branches == null) {
-        in.branches = Lists.newArrayListWithCapacity(1);
-      }
-      return in;
-    }
-  }
-
   private final Provider<IdentifiedUser> identifiedUser;
   private final GitRepositoryManager repoManager;
   private final Provider<InternalChangeQuery> queryProvider;
@@ -84,9 +69,16 @@ class DeleteBranches implements RestModifyView<ProjectResource, Input> {
   }
 
   @Override
-  public Response<?> apply(ProjectResource project, Input input)
+  public Response<?> apply(ProjectResource project, DeleteBranchesInput input)
       throws OrmException, IOException, ResourceConflictException {
-    input = Input.init(input);
+
+    if (input == null) {
+      input = new DeleteBranchesInput();
+    }
+    if (input.branches == null) {
+      input.branches = Lists.newArrayListWithCapacity(1);
+    }
+
     try (Repository r = repoManager.openRepository(project.getNameKey())) {
       BatchRefUpdate batchUpdate = r.getRefDatabase().newBatchUpdate();
       for (String branch : input.branches) {