[DO NOT MERGE] Add toggle for media resumption

Adds a toggle under Settings > Sound > Media to toggle media resumption

Bug: 154039093
Test: manual
Test: atest SettingsProviderTest
Test: make -j40 RunSettingsRoboTests ROBOTEST_FILTER="MediaControls"

Change-Id: I803c57031bc3252cab35c06ea124d1c22a3c3aeb

src/com/android/settings/sound/MediaControlsParentPreferenceController.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2020 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.sound;
+
+import static android.provider.Settings.Secure.MEDIA_CONTROLS_RESUME;
+
+import static com.android.settings.sound.MediaControlsPreferenceController.useQsMediaPlayer;
+
+import android.content.Context;
+import android.provider.Settings;
+
+import com.android.settings.R;
+import com.android.settings.core.BasePreferenceController;
+
+/**
+ * Parent menu summary of media controls settings
+ */
+public class MediaControlsParentPreferenceController extends BasePreferenceController {
+
+    public MediaControlsParentPreferenceController(Context context, String key) {
+        super(context, key);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return useQsMediaPlayer(mContext) ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+    }
+
+    @Override
+    public CharSequence getSummary() {
+        int summary;
+        if (Settings.Secure.getInt(mContext.getContentResolver(), MEDIA_CONTROLS_RESUME, 1) == 0) {
+            summary = R.string.media_controls_hide_player;
+        } else {
+            summary = R.string.media_controls_show_player;
+        }
+        return mContext.getText(summary);
+    }
+}