Add NFC Panel

NFC Panel only shows the NFC setting slice, for now.

Title is "NFC", and See More takes you to the Advanced Device Connectivity
page.

Possibly use cases would be for apps that need to enable NFC for their
peripheral, or accessory.

Test: Manual App
Test: robotest
Change-Id: I8538fd0e4501fb83672418591616f28bf2436645
Fixes: 120142616

tests/robotests/src/com/android/settings/panel/NfcPanelTest.java

@@ -0,0 +1,40 @@
+package com.android.settings.panel;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.net.Uri;
+
+import com.android.settings.slices.CustomSliceRegistry;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+
+import java.util.List;
+
+@RunWith(RobolectricTestRunner.class)
+public class NfcPanelTest {
+
+    private NfcPanel mPanel;
+
+    @Before
+    public void setUp() {
+        mPanel = NfcPanel.create(RuntimeEnvironment.application);
+    }
+
+    @Test
+    public void getSlices_containsNecessarySlices() {
+        final List<Uri> uris = mPanel.getSlices();
+
+        assertThat(uris).containsExactly(
+                CustomSliceRegistry.NFC_SLICE_URI);
+    }
+
+    @Test
+    public void getSeeMoreIntent_notNull() {
+        assertThat(mPanel.getSeeMoreIntent()).isNotNull();
+    }
+}