Data plans sync time settings preference.

Note: These changes are required for Data balance UI.
Bug: 62349208
Test: make RunSettingsRoboTests -j40
Change-Id: Id52789f2a96dea5ff8c29699ac6fab79e3c5d1bf

res/layout/data_plans_sync_time_preference.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     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.
+-->
+
+<!-- Shows the data plans sync time -->
+<TextView
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:id="@android:id/title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:paddingStart="@dimen/preference_no_icon_padding_start"
+        android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
+        android:gravity="end"
+        android:textColor="?android:attr/textColorSecondary"/>

tests/robotests/src/com/android/settings/datausage/DataPlansSyncTimePreferenceTest.java

@@ -0,0 +1,66 @@
+/*
+ * 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.datausage;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.content.Context;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceViewHolder;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+import com.android.settings.R;
+import com.android.settings.TestConfig;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public final class DataPlansSyncTimePreferenceTest {
+    private static final String SYNC_TIME = "Today 12:24pm";
+
+    private Preference mPreference;
+    private PreferenceViewHolder mHolder;
+
+    @Before
+    public void setUp() {
+        Context context = RuntimeEnvironment.application;
+        mPreference = new Preference(context);
+        mPreference.setLayoutResource(R.layout.data_plans_sync_time_preference);
+
+        LayoutInflater inflater = LayoutInflater.from(context);
+        View view = inflater.inflate(mPreference.getLayoutResource(),
+                new LinearLayout(context), false);
+        mHolder = PreferenceViewHolder.createInstanceForTests(view);
+    }
+
+    @Test
+    public void shouldRender_withData() {
+        mPreference.setTitle(SYNC_TIME);
+
+        mPreference.onBindViewHolder(mHolder);
+
+        TextView syncTimeTextView = (TextView) mHolder.findViewById(android.R.id.title);
+        assertThat(syncTimeTextView.getText()).isEqualTo(SYNC_TIME);
+    }
+}