mus: Allow embedder to intercept events.

components/mus/ws/window_server.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 COMPONENTS_MUS_WS_WINDOW_SERVER_H_
 #define COMPONENTS_MUS_WS_WINDOW_SERVER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 55 matching lines @@
       const std::map<std::string, std::vector<uint8_t>>& properties);
 
   // Returns the id for the next WindowTree.
   ClientSpecificId GetAndAdvanceNextClientId();
 
   // See description of WindowTree::Embed() for details. This assumes
   // |transport_window_id| is valid.
   WindowTree* EmbedAtWindow(ServerWindow* root,
                             const UserId& user_id,
                             mojom::WindowTreeClientPtr client,
+                            uint32_t flags,
                             std::unique_ptr<AccessPolicy> access_policy);
 
   // Adds |tree_impl_ptr| to the set of known trees. Use DestroyTree() to
   // destroy the tree.
   void AddTree(std::unique_ptr<WindowTree> tree_impl_ptr,
                std::unique_ptr<WindowTreeBinding> binding,
                mojom::WindowTreePtr tree_ptr);
   WindowTree* CreateTreeForWindowManager(
       const UserId& user_id,
       mojom::WindowTreeRequest window_tree_request,
@@ skipping 231 matching lines @@
 
   WindowManagerWindowTreeFactorySet window_manager_window_tree_factory_set_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowServer);
 };
 
 }  // namespace ws
 }  // namespace mus
 
 #endif  // COMPONENTS_MUS_WS_WINDOW_SERVER_H_