Support listing of branches via REST

GET on /projects/<project-name>/branches returns a list with the
branches of the project.

Change-Id: Ic30e4fc563799e9a4352c4ed01c4db5316abb835
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>

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

@@ -0,0 +1,35 @@
+// Copyright (C) 2013 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.server.project;
+
+import com.google.gerrit.extensions.restapi.RestView;
+import com.google.gerrit.reviewdb.client.Branch;
+import com.google.inject.TypeLiteral;
+
+public class BranchResource extends ProjectResource {
+  public static final TypeLiteral<RestView<BranchResource>> BRANCH_KIND =
+      new TypeLiteral<RestView<BranchResource>>() {};
+
+  private final Branch.NameKey branch;
+
+  public BranchResource(ProjectControl control, Branch.NameKey branch) {
+    super(control);
+    this.branch = branch;
+  }
+
+  public Branch.NameKey getBranch() {
+    return branch;
+  }
+}