mus: Allow embedder to intercept events.

components/mus/public/cpp/window_tree_client.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_PUBLIC_CPP_WINDOW_TREE_CLIENT_H_
 #define COMPONENTS_MUS_PUBLIC_CPP_WINDOW_TREE_CLIENT_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 107 matching lines @@
   void SetProperty(Window* window,
                    const std::string& name,
                    mojo::Array<uint8_t> data);
   void SetWindowTextInputState(Id window_id, mojo::TextInputStatePtr state);
   void SetImeVisibility(Id window_id,
                         bool visible,
                         mojo::TextInputStatePtr state);
 
   void Embed(Id window_id,
              mojom::WindowTreeClientPtr client,
+             uint32_t flags,
              const mojom::WindowTree::EmbedCallback& callback);
 
   void RequestClose(Window* window);
 
   void AttachSurface(Id window_id,
                      mojom::SurfaceType type,
                      mojo::InterfaceRequest<mojom::Surface> surface,
                      mojom::SurfaceClientPtr client);
 
   // Sets the input capture to |window| without notifying the server.
@@ skipping 259 matching lines @@
   uint32_t event_observer_id_ = 0u;
 
   base::WeakPtrFactory<WindowTreeClient> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowTreeClient);
 };
 
 }  // namespace mus
 
 #endif  // COMPONENTS_MUS_PUBLIC_CPP_WINDOW_TREE_CLIENT_H_