mus: Allow embedder to intercept events.

components/mus/public/cpp/lib/window_tree_client.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_tree_client.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <utility>
@@ skipping 325 matching lines @@
   tree_->SetWindowTextInputState(window_id, std::move(state));
 }
 
 void WindowTreeClient::SetImeVisibility(Id window_id,
                                             bool visible,
                                             mojo::TextInputStatePtr state) {
   DCHECK(tree_);
   tree_->SetImeVisibility(window_id, visible, std::move(state));
 }
 
-void WindowTreeClient::Embed(
-    Id window_id,
-    mojom::WindowTreeClientPtr client,
-    const mojom::WindowTree::EmbedCallback& callback) {
+void WindowTreeClient::Embed(Id window_id,
+                             mojom::WindowTreeClientPtr client,
+                             uint32_t flags,
+                             const mojom::WindowTree::EmbedCallback& callback) {
   DCHECK(tree_);
-  tree_->Embed(window_id, std::move(client), callback);
+  tree_->Embed(window_id, std::move(client), flags, callback);
 }
 
 void WindowTreeClient::RequestClose(Window* window) {
   if (window_manager_internal_client_)
     window_manager_internal_client_->WmRequestClose(server_id(window));
 }
 
 void WindowTreeClient::AttachSurface(
     Id window_id,
     mojom::SurfaceType type,
@@ skipping 740 matching lines @@
     Window* window,
     const gfx::Vector2d& offset,
     const gfx::Insets& hit_area) {
   if (window_manager_internal_client_) {
     window_manager_internal_client_->SetUnderlaySurfaceOffsetAndExtendedHitArea(
         server_id(window), offset.x(), offset.y(), hit_area);
   }
 }
 
 }  // namespace mus