Move NotificationCompat.MediaStyle to media-compat

Deprecate the v7 NotificationCompat.MediaStyle and
DecoratedMediaCustomViewStyle and move their implementations
to media-compat.

This requires adding resources to media-compat.

This will allow us to eventually remove the dependency between
AppCompat and media-compat.

Test: Manual inspection
BUG: 33042051
Change-Id: I2707ab78006340a210f6bbfedb6da9bb8271fb5e
diff --git a/media-compat/res-public/values/public_styles.xml b/media-compat/res-public/values/public_styles.xml
new file mode 100644
index 0000000..9113f6e
--- /dev/null
+++ b/media-compat/res-public/values/public_styles.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 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.
+  -->
+
+<!-- Definitions of styles to be exposed as public -->
+<resources>
+    <public type="style" name="TextAppearance.Compat.Notification.Media"/>
+    <public type="style" name="TextAppearance.Compat.Notification.Title.Media"/>
+    <public type="style" name="TextAppearance.Compat.Notification.Info.Media"/>
+    <public type="style" name="TextAppearance.Compat.Notification.Time.Media"/>
+    <public type="style" name="TextAppearance.Compat.Notification.Line2.Media"/>
+</resources>