Initial commit of updatable media API

Test: Created instance & called method
Change-Id: Ie886936c50884636b33112e6d5e44b43cfe504ae
diff --git a/packages/MediaUpdate/proguard.cfg b/packages/MediaUpdate/proguard.cfg
new file mode 100644
index 0000000..874dbf5
--- /dev/null
+++ b/packages/MediaUpdate/proguard.cfg
@@ -0,0 +1,20 @@
+#
+# Copyright 2017 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.
+#
+
+# Keep entry point for updatable Java classes
+-keep public class com.android.media.update.ApiFactory {
+   public static java.lang.Object initialize(android.content.Context);
+}