Implemented CarVendorExtensionManager

Also, some refactoring like omitting excessive
synchronization and reworked takeSupportedProperties from
being exception driven in PropertyHalServiceBase.
Change switch/case statement to SparseIntArray, it has
some maintanance and performance benefits.

Change-Id: Ie9e9239718d6fb50801a616b823a20567237ac95
Fix: b/28244032
diff --git a/service/src/com/android/car/CarVendorExtensionService.java b/service/src/com/android/car/CarVendorExtensionService.java
new file mode 100644
index 0000000..e4112e2
--- /dev/null
+++ b/service/src/com/android/car/CarVendorExtensionService.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2016 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.car;
+
+import android.car.Car;
+import android.content.Context;
+
+import com.android.car.hal.VehicleHal;
+
+/**
+ * Service responsible for handling custom properties that were defined in vehicle HAL by OEMs.
+ */
+public class CarVendorExtensionService extends CarPropertyServiceBase {
+
+    private final static boolean DEBUG = true;
+
+    public CarVendorExtensionService(Context context) {
+        super(context, VehicleHal.getInstance().getVendorExtensionHal(),
+                Car.PERMISSION_VENDOR_EXTENSION, DEBUG, CarLog.TAG_VENDOR_EXT);
+    }
+}