Splits window manager like methods into ViewManagerServiceDelegate

mojo/services/window_manager/window_manager_delegate.h

+// Copyright 2014 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 MOJO_SERVICES_WINDOW_MANAGER_WINDOW_MANAGER_DELEGATE_H_
+#define MOJO_SERVICES_WINDOW_MANAGER_WINDOW_MANAGER_DELEGATE_H_
+
+#include "mojo/public/cpp/bindings/string.h"
+#include "mojo/public/interfaces/application/service_provider.mojom.h"
+
+namespace mojo {
+
+class WindowManagerDelegate {
+ public:
+  // See WindowManager::Embed() for details.
+  virtual void Embed(const String& url,
+                     InterfaceRequest<ServiceProvider> service_provider) = 0;
+
+ protected:
+  virtual ~WindowManagerDelegate() {}
+};
+
+}  // namespace mojo
+
+#endif  // MOJO_SERVICES_WINDOW_MANAGER_WINDOW_MANAGER_DELEGATE_H_