mus: Allow embedder to intercept events.

components/mus/public/cpp/lib/window.cc

 // 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.
 
 #include "components/mus/public/cpp/window.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <set>
@@ skipping 429 matching lines @@
 
 bool Window::HasFocus() const {
   return client_ && client_->GetFocusedWindow() == this;
 }
 
 void Window::SetCanFocus(bool can_focus) {
   if (client_)
     client_->SetCanFocus(server_id_, can_focus);
 }
 
-void Window::Embed(mus::mojom::WindowTreeClientPtr client) {
-  Embed(std::move(client), base::Bind(&EmptyEmbedCallback));
+void Window::Embed(mus::mojom::WindowTreeClientPtr client, uint32_t flags) {
+  Embed(std::move(client), base::Bind(&EmptyEmbedCallback), flags);
 }
 
 void Window::Embed(mus::mojom::WindowTreeClientPtr client,
-                   const EmbedCallback& callback) {
+                   const EmbedCallback& callback,
+                   uint32_t flags) {
   if (PrepareForEmbed())
-    client_->Embed(server_id_, std::move(client), callback);
+    client_->Embed(server_id_, std::move(client), flags, callback);
   else
     callback.Run(false);
 }
 
 void Window::RequestClose() {
   if (client_)
     client_->RequestClose(this);
 }
 
 std::string Window::GetName() const {
@@ skipping 413 matching lines @@
     notifier->NotifyWindowReordered();
 
   return true;
 }
 
 // static
 Window** Window::GetStackingTarget(Window* window) {
   return &window->stacking_target_;
 }
 }  // namespace mus