Remove need for onActivityResult from KeyChain API

Change-Id: I97bb9db06978f6dc039d22bfee116671d7b3e336
diff --git a/keystore/java/android/security/KeyChainAliasResponse.java b/keystore/java/android/security/KeyChainAliasResponse.java
new file mode 100644
index 0000000..bcca123
--- /dev/null
+++ b/keystore/java/android/security/KeyChainAliasResponse.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2011 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 android.security;
+
+import android.content.Intent;
+import java.security.PrivateKey;
+import java.security.cert.X509Certificate;
+
+/**
+ * The KeyChainAliasResponse is the callback for {@link
+ * KeyChain#chooseAlias}.
+ *
+ * @hide
+ */
+public interface KeyChainAliasResponse {
+
+    /**
+     * Called with the alias of the certificate chosen by the user, or
+     * null if no value was chosen.
+     */
+    public void alias(String alias);
+}