Splits window manager like methods into ViewManagerServiceDelegate

mojo/services/public/interfaces/window_manager/window_manager.mojom

+// 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.
+
+import "mojo/public/interfaces/application/service_provider.mojom"
+import "mojo/services/public/interfaces/input_events/input_events.mojom"
+
+module mojo {
+
+// WindowManagerService provides high level window management policies.
+// WindowManagerService is used by the ViewManager. More specifically the first
+// connection from the ViewManager is expected to provide the
+// WindowManagerService.
+[Client=WindowManagerClient]
+interface WindowManagerService {
+  // Asks the WindowManager to embed |url| at the appropriate place. See
+  // ViewManager::Embed for details of |service_provider|.
+  Embed(string url, ServiceProvider&? service_provider);
+
+  // Called when an input event is received from the native system. It's
+  // expected that when this is received the WindowManagerService will call back
+  // to WindowManagerServieClient will call DispatchInputEventToView().
+  OnViewInputEvent(mojo.Event event);
+};
+
+// ViewManager provides this interface for functionality only exposed to the
+// WindowManagerServie.
+[Client=WindowManagerService]
+interface WindowManagerClient {
+  // Dispatches the specified input event to the specified view.
+  DispatchInputEventToView(uint32 view_id, mojo.Event event);
+};
+
+}