WIP: Propagate SurfaceID up window tree hierarchy

services/ui/public/interfaces/window_tree.mojom

 // 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.
 
 module ui.mojom;
 
 import "cc/ipc/surface_id.mojom";
+import "cc/ipc/surface_sequence.mojom";
 import "services/ui/public/interfaces/cursor.mojom";
 import "services/ui/public/interfaces/event_matcher.mojom";
 import "services/ui/public/interfaces/mus_constants.mojom";
 import "services/ui/public/interfaces/surface.mojom";
 import "services/ui/public/interfaces/window_manager.mojom";
 import "services/ui/public/interfaces/window_manager_constants.mojom";
 import "services/ui/public/interfaces/window_tree_constants.mojom";
 import "ui/events/mojo/event.mojom";
 import "ui/gfx/geometry/mojo/geometry.mojom";
 import "ui/platform_window/mojo/text_input_state.mojom";
@@ skipping 117 matching lines @@
 
   // Sets the opacity of the specified window to |opacity|.
   SetWindowOpacity(uint32 change_id, uint32 window_id, float opacity);
 
   // Attaches a Surface to a particular window.
   AttachSurface(uint32 window_id,
                 SurfaceType type,
                 Surface& surface,
                 SurfaceClient client);
 
+  // Returns reference to the surface.
+  SatisfySurfaceSequence(uint32 window_id,
+                         cc.mojom.SurfaceSequence sequence);
+
   // Reparents a window.
   // This fails for any of the following reasons:
   // . |parent| or |child| does not identify a valid window.
   // . |child| is an ancestor of |parent|.
   // . |child| is already a child of |parent|.
   //
   // This may result in a connection getting OnWindowDeleted(). See
   // RemoveWindowFromParent for details.
   AddWindow(uint32 change_id, uint32 parent, uint32 child);
 
@@ skipping 178 matching lines @@
   OnTopLevelCreated(uint32 change_id,
                     WindowData data,
                     int64 display_id,
                     bool parent_drawn);
 
   // Invoked when a window's bounds have changed.
   OnWindowBoundsChanged(uint32 window,
                         gfx.mojom.Rect old_bounds,
                         gfx.mojom.Rect new_bounds);
 
+  // Invoked when a client window submits a new surface ID.
+  OnWindowSurfaceCreated(uint32 window_id,
+                         gfx.mojom.Size size,
+                         float device_scale_factor,
+                         cc.mojom.SurfaceId surface_id,
+                         cc.mojom.SurfaceSequence surface_sequence);
+
   OnClientAreaChanged(uint32 window_id,
                       gfx.mojom.Insets new_client_area,
                       array<gfx.mojom.Rect> new_additional_client_areas);
 
   OnTransientWindowAdded(uint32 window_id,
                          uint32 transient_window_id);
 
   OnTransientWindowRemoved(uint32 window_id,
                            uint32 transient_window_id);
 
@@ skipping 123 matching lines @@
   // See description of WindowManager for details.
   GetWindowManager(associated WindowManager& internal);
 };
 
 // Mus provides this interface as a way for clients to connect and obtain a
 // WindowTree handle with a supplied WindowTreeClient handle. The
 // WindowTreeClient has no roots, use NewTopLevelWindow() to create one.
 interface WindowTreeFactory {
   CreateWindowTree(WindowTree& tree_request, WindowTreeClient client);
 };