Add layout for advanced BT detail header

If device supports metadata, then we display advanced UI in Bluetooth
details header. This CL adds layout for this header.

In advanced layout, it will show:
1. Device name
2. Left, right and case icon
3. Left, right and case battery level

Once API is ready, following CL will get metadata from it and set it
to UI.
Bug: 122460277
Test: RunSettingsRoboTests
Change-Id: Ide044cf9705f350b431b2cb3a9ad82cc4425a17e

tests/robotests/src/com/android/settings/bluetooth/AdvancedBluetoothDetailsHeaderControllerTest.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2019 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.bluetooth;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+
+import com.android.settings.fuelgauge.BatteryMeterView;
+import com.android.settings.testutils.shadow.ShadowEntityHeaderController;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+
+@RunWith(RobolectricTestRunner.class)
+@Config(shadows = ShadowEntityHeaderController.class)
+public class AdvancedBluetoothDetailsHeaderControllerTest{
+    private static final int BATTERY_LEVEL = 30;
+
+    private Context mContext;
+    private AdvancedBluetoothDetailsHeaderController mController;
+
+    @Before
+    public void setUp() {
+        mContext = RuntimeEnvironment.application;
+
+        mController = new AdvancedBluetoothDetailsHeaderController(mContext, "pref_Key");
+    }
+
+    @Test
+    public void createBatteryIcon_hasCorrectInfo() {
+        final Drawable drawable = mController.createBtBatteryIcon(mContext, BATTERY_LEVEL);
+        assertThat(drawable).isInstanceOf(BatteryMeterView.BatteryMeterDrawable.class);
+
+        final BatteryMeterView.BatteryMeterDrawable iconDrawable =
+                (BatteryMeterView.BatteryMeterDrawable) drawable;
+        assertThat(iconDrawable.getBatteryLevel()).isEqualTo(BATTERY_LEVEL);
+    }
+
+}

tests/robotests/src/com/android/settings/bluetooth/BluetoothDetailsHeaderControllerTest.java

@@ -50,7 +50,6 @@ import org.robolectric.RobolectricTestRunner;
 import org.robolectric.annotation.Config;
 
 @RunWith(RobolectricTestRunner.class)
-
 @Config(shadows = ShadowEntityHeaderController.class)
 public class BluetoothDetailsHeaderControllerTest extends BluetoothDetailsControllerTestBase {