Adds a way to determine id of content handler that created app

mojo/runner/shell_test_base.cc

Index: mojo/runner/shell_test_base.cc
diff --git a/mojo/runner/shell_test_base.cc b/mojo/runner/shell_test_base.cc
index efa5656bcff5f25d06837b1bfcb4a3e49b487111..01a9fb743b677df566750abd99c4649189123694 100644
--- a/mojo/runner/shell_test_base.cc
+++ b/mojo/runner/shell_test_base.cc
@@ -52,9 +52,10 @@ ScopedMessagePipeHandle ShellTestBase::ConnectToService(
   mojo::URLRequestPtr request(mojo::URLRequest::New());
   request->url = mojo::String::From(application_url.spec());
   shell_context_.application_manager()->ConnectToApplication(
-      nullptr, request.Pass(), std::string(), GURL(), GetProxy(&services),
+      nullptr, request.Pass(), std::string(), GURL(),
+      shell::ApplicationManager::kInvalidContentHandlerID, GetProxy(&services),
       nullptr, shell::GetPermissiveCapabilityFilter(),
-      base::Bind(&QuitIfRunning));
+      base::Bind(&QuitIfRunning), shell::EmptyConnectCallback());
   MessagePipe pipe;
   services->ConnectToService(service_name, pipe.handle1.Pass());
   return pipe.handle0.Pass();