Create an overlay to add a photo and video deletion helper service.

This overlay defines a checkbox preference in the deletion helper for
facilitating the deletion of photos and videos. The service which
provides deletion clearing can be overridden and used to create a
custom photo and video deletion helper.

Bug: 28554187
Bug: 28560856

Change-Id: Id5d9671a307aaac0d1331f055b8f2ab7aa67977c

src/com/android/settings/overlay/DeletionHelperFeatureProvider.java

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2016 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.overlay;
+
+import android.support.v7.preference.PreferenceGroup;
+import com.android.settings.deletionhelper.DeletionType;
+
+/**
+ * Feature provider for the manual deletion helper Settings page.
+ */
+public interface DeletionHelperFeatureProvider {
+    /**
+     * Creates a {@link DeletionType} for clearing out stored photos and videos on the device.
+     */
+    DeletionType createPhotoVideoDeletionType();
+}