Add SuggestionFeatureProvider interface.

The interface is added so that a vendor can add new suggestions to the
settings app, and customize details for these suggestions.

Test: make RunSettingsRoboTests

BUG: 34219298

Change-Id: I373c63709b1aaf68360aa2561a2ecfc3194e0e2b

src/com/android/settings/dashboard/SuggestionFeatureProvider.java

@@ -0,0 +1,30 @@
+/*
+ * 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
+ */
+
+package com.android.settings.dashboard;
+
+import android.content.Context;
+
+/** Interface should be implemented if you have added new suggestions */
+public interface SuggestionFeatureProvider {
+
+    /** Return true if className is the name of a class of one of your newly added suggestion. */
+    boolean isPresent(String className);
+
+    /** Return true if the suggestion has already been completed and does not need to be shown */
+    boolean isSuggestionCompleted(Context context);
+
+}