WIP: Surface Synchronization System

services/ui/ws/frame_generator.cc

Index: services/ui/ws/frame_generator.cc
diff --git a/services/ui/ws/frame_generator.cc b/services/ui/ws/frame_generator.cc
index ba893e2095cb53ccc60cc1e438b7668ec5827727..f8e2adb735735dd1b94a52c25290b0966ddd8376 100644
--- a/services/ui/ws/frame_generator.cc
+++ b/services/ui/ws/frame_generator.cc
@@ -143,6 +143,9 @@ cc::CompositorFrame FrameGenerator::GenerateCompositorFrame(
   if (window_manager_surface_info_.id().is_valid()) {
     frame.metadata.referenced_surfaces.push_back(
         window_manager_surface_info_.id());
+    // We have nothing useful to do UNTIL the window manager has something to
+    // show.
+    frame.metadata.respect_deadline = false;
   }
 
   return frame;
@@ -154,6 +157,8 @@ void FrameGenerator::DrawWindow(cc::RenderPass* pass) {
   const gfx::Rect bounds_at_origin(
       window_manager_surface_info_.size_in_pixels());
 
+  // fprintf(stderr, ">>>>DrawWindow %s\n",
+  // default_surface_id.ToString().c_str());
   gfx::Transform quad_to_target_transform;
   quad_to_target_transform.Translate(bounds_at_origin.x(),
                                      bounds_at_origin.y());
@@ -175,7 +180,8 @@ void FrameGenerator::DrawWindow(cc::RenderPass* pass) {
   auto* quad = pass->CreateAndAppendDrawQuad<cc::SurfaceDrawQuad>();
   quad->SetAll(sqs, bounds_at_origin /* rect */, gfx::Rect() /* opaque_rect */,
                bounds_at_origin /* visible_rect */, true /* needs_blending*/,
-               window_manager_surface_info_.id());
+               window_manager_surface_info_.id(),
+               cc::SurfaceDrawQuadType::PRIMARY, nullptr);
 }
 
 }  // namespace ws