Mus+Ash: propagate Surface ID to parents

services/ui/public/cpp/window_tree_client.cc

Index: services/ui/public/cpp/window_tree_client.cc
diff --git a/services/ui/public/cpp/window_tree_client.cc b/services/ui/public/cpp/window_tree_client.cc
index bd2d3578d7a1033c33fd34e85b2c038d8d93a14c..43098a21ea1d543cebef6d2b11364d3ec200041f 100644
--- a/services/ui/public/cpp/window_tree_client.cc
+++ b/services/ui/public/cpp/window_tree_client.cc
@@ -356,6 +356,13 @@ void WindowTreeClient::AttachSurface(
   tree_->AttachSurface(window_id, type, std::move(surface), std::move(client));
 }
 
+void WindowTreeClient::ReturnSurfaceReference(
+    Id window_id,
+    const cc::SurfaceSequence& sequence) {
+  DCHECK(tree_);
+  tree_->ReturnSurfaceReference(window_id, sequence);
+}
+
 void WindowTreeClient::LocalSetCapture(Window* window) {
   if (capture_window_ == window)
     return;
@@ -1092,6 +1099,19 @@ void WindowTreeClient::OnWindowPredefinedCursorChanged(
   WindowPrivate(window).LocalSetPredefinedCursor(cursor);
 }
 
+void WindowTreeClient::OnWindowSurfaceCreated(
+    Id window_id,
+    const cc::SurfaceId& surface_id,
+    const cc::SurfaceSequence& surface_sequence,
+    const gfx::Size& frame_size,
+    float device_scale_factor) {
+  Window* window = GetWindowByServerId(window_id);
+  if (!window)
+    return;
+  WindowPrivate(window).LocalSetSurfaceId(surface_id, surface_sequence,
+                                          frame_size, device_scale_factor);
+}
+
 void WindowTreeClient::OnDragDropStart(
     mojo::Map<mojo::String, mojo::Array<uint8_t>> mime_data) {
   mime_drag_data_ = std::move(mime_data);