Add simple mash context menu support.

chrome/browser/chromeos/chrome_interface_factory.cc

 // 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.
 
 #include "chrome/browser/chromeos/chrome_interface_factory.h"
 
+#include "chrome/browser/ui/ash/context_menu.h"
 #include "chrome/browser/ui/ash/keyboard_ui_service.h"
 #include "mojo/shell/public/cpp/connection.h"
 
 namespace chromeos {
 
 ChromeInterfaceFactory::ChromeInterfaceFactory() {}
 ChromeInterfaceFactory::~ChromeInterfaceFactory() {}
 
 bool ChromeInterfaceFactory::AcceptConnection(mojo::Connection* connection) {
   connection->AddInterface(this);
   return true;
 }
 
 void ChromeInterfaceFactory::Create(
     mojo::Connection* connection,
     mojo::InterfaceRequest<keyboard::mojom::Keyboard> request) {
   if (!keyboard_ui_service_)
     keyboard_ui_service_.reset(new KeyboardUIService);
   keyboard_bindings_.AddBinding(keyboard_ui_service_.get(), std::move(request));
 }
 
+void ChromeInterfaceFactory::Create(
+    mojo::Connection* connection,
+    mojo::InterfaceRequest<mash::shelf::mojom::ContextMenu> request) {
+  if (!context_menu_)
+    context_menu_.reset(new ContextMenu);
+  context_menu_bindings_.AddBinding(context_menu_.get(), std::move(request));
+}
+
 }  // namespace chromeos