Chrome-side patch for IsAppInstalled.

content/common/installedapp/installed_app_provider_impl.h

+// 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.
+
+#ifndef CONTENT_COMMON_INSTALLEDAPP_INSTALLED_APP_PROVIDER_IMPL_H
+#define CONTENT_COMMON_INSTALLEDAPP_INSTALLED_APP_PROVIDER_IMPL_H
+
+#include "content/common/installedapp/installed_app_provider.mojom.h"
+
+namespace content {
+
+class InstalledAppProviderImpl {
+ public:
+  static void Create(mojo::InterfaceRequest<InstalledAppProvider> request);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_INSTALLEDAPP_INSTALLED_APP_PROVIDER_IMPL_H