Add AnimatedVectorDrawable support for VideoPreference

- We are planning to use animation vector drawable to replace mp4
file to reduce apk size
- Add vectorAnimation attr in VideoPreference
- Delegate VideoPreference media control to AnimationController

Bug: 143270527
Test: manual, robolectric
Change-Id: Ia5859f928a9082085cdf715c762f964e1c99e003

tests/robotests/src/com/android/settings/testutils/shadow/ShadowSettingsMediaPlayer.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2019 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.android.settings.testutils.shadow;
+
+import static org.robolectric.shadows.ShadowMediaPlayer.State.INITIALIZED;
+
+import android.content.Context;
+import android.media.MediaPlayer;
+import android.net.Uri;
+
+import org.robolectric.annotation.Implementation;
+import org.robolectric.annotation.Implements;
+import org.robolectric.shadow.api.Shadow;
+import org.robolectric.shadows.ShadowMediaPlayer;
+import org.robolectric.shadows.util.DataSource;
+
+@Implements(MediaPlayer.class)
+public class ShadowSettingsMediaPlayer extends ShadowMediaPlayer {
+
+    @Implementation
+    public static MediaPlayer create(Context context, Uri uri) {
+        final DataSource ds = DataSource.toDataSource(context, uri);
+        addMediaInfo(ds, new ShadowMediaPlayer.MediaInfo());
+
+        final MediaPlayer mp = new MediaPlayer();
+        final ShadowMediaPlayer shadow = Shadow.extract(mp);
+        try {
+            shadow.setDataSource(ds);
+            shadow.setState(INITIALIZED);
+            mp.prepare();
+        } catch (Exception e) {
+            return null;
+        }
+
+        return mp;
+    }
+}