Move code from SuggestionChecks to FeatureProvider

This is step one to deprecate SuggestionChecks. Moving logic into
SuggestionFeatureProvider allows potential logic override and improves
testability.

Also moved isSuggestionComplete tests to corresponding activity/pref
controller test.

Bug: 65065268
Test: robotests
Change-Id: I2071d30fc58bb84acad2083ca03cfcf7d41f10cb

src/com/android/settings/wifi/WifiCallingSuggestionActivity.java

@@ -0,0 +1,34 @@
+/*
+ * 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.wifi;
+
+import android.content.Context;
+
+import com.android.ims.ImsManager;
+import com.android.settings.SettingsActivity;
+
+public class WifiCallingSuggestionActivity extends SettingsActivity {
+
+    public static boolean isSuggestionComplete(Context context) {
+        if (!ImsManager.isWfcEnabledByPlatform(context) ||
+                !ImsManager.isWfcProvisionedOnDevice(context)) {
+            return true;
+        }
+        return ImsManager.isWfcEnabledByUser(context)
+                && ImsManager.isNonTtyOrTtyOnVolteEnabled(context);
+    }
+}