Introduce intent manager.

mojo/public/java/application/src/org/chromium/mojo/application/ShellHelper.java

Index: mojo/public/java/application/src/org/chromium/mojo/application/ShellHelper.java
diff --git a/mojo/public/java/application/src/org/chromium/mojo/application/ShellHelper.java b/mojo/public/java/application/src/org/chromium/mojo/application/ShellHelper.java
new file mode 100644
index 0000000000000000000000000000000000000000..705e22e12c1b9ff6f339130782993da2896a4bf9
--- /dev/null
+++ b/mojo/public/java/application/src/org/chromium/mojo/application/ShellHelper.java
@@ -0,0 +1,40 @@
+// Copyright 2015 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.mojo.application;
+
+import org.chromium.mojo.bindings.Interface;
+import org.chromium.mojo.bindings.Interface.Proxy;
+import org.chromium.mojo.bindings.InterfaceRequest;
+import org.chromium.mojo.system.Core;
+import org.chromium.mojo.system.Pair;
+import org.chromium.mojom.mojo.ServiceProvider;
+import org.chromium.mojom.mojo.Shell;
+
+/**
+ * Helper class to help connecting to other application through the shell.
+ */
+public class ShellHelper {
+    /**
+     * Connects to a service in another application.
+     *
+     * @param core Implementation of the {@link Core} api.
+     * @param shell Instance of the shell.
+     * @param application URL to the application to use.
+     * @param manager {@link org.chromium.mojo.bindings.Interface.Manager} for the service to
+     *            connect to.
+     * @return a proxy to the service.
+     */
+    public static <I extends Interface, P extends Proxy> P connectToService(
+            Core core, Shell shell, String application, Interface.Manager<I, P> manager) {
+        Pair<ServiceProvider.Proxy, InterfaceRequest<ServiceProvider>> providerRequest =
+                ServiceProvider.MANAGER.getInterfaceRequest(core);
+        try (ServiceProvider.Proxy provider = providerRequest.first) {
+            shell.connectToApplication(application, providerRequest.second, null);
+            Pair<P, InterfaceRequest<I>> serviceRequest = manager.getInterfaceRequest(core);
+            provider.connectToService(manager.getName(), serviceRequest.second.passHandle());
+            return serviceRequest.first;
+        }
+    }
+}