Expose the Java ServiceRegistryInterface in content_public.

content/public/android/java/src/org/chromium/content_public/browser/ServiceRegistryInterface.java

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.content_public.browser;
+
+import org.chromium.mojo.bindings.Interface;
+import org.chromium.mojo.bindings.Interface.Proxy;
+
+/**
+ * The interface for the Java wrapper over Mojo ServiceRegistry held by the browser.
+ */
+public interface ServiceRegistryInterface {
+    /**
+     * The interface that a factory should implement.
+     */
+    interface ImplementationFactory<I extends Interface> {
+        I createImpl();
+    }
+
+    /**
+     * Adds a service factory.
+     *
+     * @param manager The interface manager.
+     * @param factory The service factory.
+     */
+    <I extends Interface, P extends Proxy> void addService(
+            Interface.Manager<I, P> manager, ImplementationFactory<I> factory);
+}