Turning AccountTypeManager into a "system" service.

It's really not a system service proper.  It just
uses the same API and the same dependency injection
mechanism as for system services.

Change-Id: I56e24e0f16642a5ab25e809ee12906d965845379
diff --git a/src/com/android/contacts/ContactsActivity.java b/src/com/android/contacts/ContactsActivity.java
new file mode 100644
index 0000000..913bc4c
--- /dev/null
+++ b/src/com/android/contacts/ContactsActivity.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2010 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.contacts;
+
+import android.app.Activity;
+
+/**
+ * A common superclass for Contacts activities that handles application-wide services.
+ */
+public abstract class ContactsActivity extends Activity {
+
+    @Override
+    public Object getSystemService(String name) {
+        Object service = super.getSystemService(name);
+        if (service != null) {
+            return service;
+        }
+
+        return getApplicationContext().getSystemService(name);
+    }
+}