Convert view manager to surfaces with uploading shim in client lib

mojo/services/public/interfaces/view_manager/view_manager.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.
 
 import "mojo/public/interfaces/application/service_provider.mojom"
 import "mojo/services/public/interfaces/geometry/geometry.mojom"
 import "mojo/services/public/interfaces/input_events/input_events.mojom"
+import "mojo/services/public/interfaces/surfaces/surface_id.mojom"
 import "mojo/services/public/interfaces/view_manager/view_manager_constants.mojom"
 
 module mojo {
 
 struct ViewData {
   uint32 parent_id;
   uint32 view_id;
   mojo.Rect? bounds;
   // TODO(sky): add visible.
 };
@@ skipping 75 matching lines @@
   ReorderView(uint32 view_id,
               uint32 relative_view_id,
               OrderDirection direction) => (bool success);
 
   // Returns the views comprising the tree starting at |view_id|. |view_id| is
   // the first result in the return value, unless |view_id| is invalid, in which
   // case an empty vector is returned. The views are visited using a depth first
   // search (pre-order).
   GetViewTree(uint32 view_id) => (ViewData?[]? views);
 
-  // Shows the specified image (png encoded) in the specified view.
-  SetViewContents(uint32 view_id,
-                  handle<shared_buffer>? buffer,
-                  uint32 buffer_size) => (bool success);
+  // Shows the surface in the specified view.
+  SetViewSurfaceId(uint32 view_id, SurfaceId surface_id) => (bool success);
 
   // Embeds the app for |url| in the specified view. More specifically this
   // creates a new connection to the specified url, expecting to get a
   // ViewManagerClient and configures it with the root view |view|. Fails
   // if |view| was not created by this connection.
   //
   // If a particular client invokes Embed() multiple times with the same url,
   // the connection is reused. When this happens the ViewManagerClient is
   // notified of the additional roots by way of OnEmbed().
   //
@@ skipping 73 matching lines @@
   //            once support for derived FIFOs is landed.
 
   // Requests the window manager create a "top level" view embedding |url|.
   Embed(string? url, ServiceProvider&? service_provider);
 
   // Requests the view manager dispatch the event.
   DispatchOnViewInputEvent(mojo.Event? event);
 };
 
 }