Add icon in RestrictedAppDetails

use preference_app to make sure the app icon is 24dp.

Bug: 71502850
Test: Screenshot | RunSettingsRoboTests
Change-Id: I0d7704246299201e72b991f199f9ddd2f224a8a3

src/com/android/settings/widget/AppCheckBoxPreference.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2018 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.widget;
+
+import android.content.Context;
+import android.support.v7.preference.CheckBoxPreference;
+import android.util.AttributeSet;
+
+import com.android.settings.R;
+
+/**
+ * {@link CheckBoxPreference} that used only to display app
+ */
+public class AppCheckBoxPreference extends CheckBoxPreference {
+    public AppCheckBoxPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        setLayoutResource(R.layout.preference_app);
+    }
+
+    public AppCheckBoxPreference(Context context) {
+        super(context);
+        setLayoutResource(R.layout.preference_app);
+    }
+}