mus: Allow embedder to intercept events.

components/mus/ws/window_server.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/ws/window_server.h"
 
 #include <set>
 #include <string>
 
 #include "base/logging.h"
@@ skipping 56 matching lines @@
 ClientSpecificId WindowServer::GetAndAdvanceNextClientId() {
   const ClientSpecificId id = next_client_id_++;
   DCHECK_LT(id, next_client_id_);
   return id;
 }
 
 WindowTree* WindowServer::EmbedAtWindow(
     ServerWindow* root,
     const UserId& user_id,
     mojom::WindowTreeClientPtr client,
+    uint32_t flags,
     std::unique_ptr<AccessPolicy> access_policy) {
   std::unique_ptr<WindowTree> tree_ptr(
       new WindowTree(this, user_id, root, std::move(access_policy)));
   WindowTree* tree = tree_ptr.get();
+  if (flags & mojom::kEmbedFlagEmbedderInterceptsEvents)
+    tree->set_embedder_intercepts_events();
 
   mojom::WindowTreePtr window_tree_ptr;
   mojom::WindowTreeRequest window_tree_request = GetProxy(&window_tree_ptr);
   std::unique_ptr<WindowTreeBinding> binding =
       delegate_->CreateWindowTreeBinding(
           WindowServerDelegate::BindingType::EMBED, this, tree,
           &window_tree_request, &client);
   if (!binding) {
     binding.reset(new ws::DefaultWindowTreeBinding(
         tree, this, std::move(window_tree_request), std::move(client)));
@@ skipping 584 matching lines @@
 }
 
 WindowManagerState* WindowServer::GetWindowManagerStateForUser(
     const UserId& user_id) {
   return window_manager_window_tree_factory_set_.GetWindowManagerStateForUser(
       user_id);
 }
 
 }  // namespace ws
 }  // namespace mus