Make sure that Content Handled application can be connected multiple times.

mojo/services/public/cpp/view_manager/tests/view_manager_unittest.cc

Index: mojo/services/public/cpp/view_manager/tests/view_manager_unittest.cc
diff --git a/mojo/services/public/cpp/view_manager/tests/view_manager_unittest.cc b/mojo/services/public/cpp/view_manager/tests/view_manager_unittest.cc
index 620307eb64075c0740862fe5886ff681ea175f05..be8849847806d9aab11f42050b08ff0f785d9db4 100644
--- a/mojo/services/public/cpp/view_manager/tests/view_manager_unittest.cc
+++ b/mojo/services/public/cpp/view_manager/tests/view_manager_unittest.cc
@@ -63,12 +63,11 @@ class ConnectApplicationLoader : public ApplicationLoader,
   // Overridden from ApplicationLoader:
   void Load(ApplicationManager* manager,
             const GURL& url,
+            ScopedMessagePipeHandle shell_handle,
             scoped_refptr<LoadCallbacks> callbacks) override {
-    ScopedMessagePipeHandle shell_handle = callbacks->RegisterApplication();
-    if (!shell_handle.is_valid())
-      return;
-    scoped_ptr<ApplicationImpl> app(new ApplicationImpl(this,
-                                                        shell_handle.Pass()));
+    ASSERT_TRUE(shell_handle.is_valid());
+    scoped_ptr<ApplicationImpl> app(
+        new ApplicationImpl(this, shell_handle.Pass()));
     apps_.push_back(app.release());
   }