Revamp OffscreenCanvas commit flow

content/browser/renderer_host/offscreen_canvas_surface_manager.cc

Index: content/browser/renderer_host/offscreen_canvas_surface_manager.cc
diff --git a/content/browser/renderer_host/offscreen_canvas_surface_manager.cc b/content/browser/renderer_host/offscreen_canvas_surface_manager.cc
index bf7fecb0363ef2703bc452dcfdf794692218999c..c7cfad23dcfcbaac8ef88c3b232dce65ee8eae53 100644
--- a/content/browser/renderer_host/offscreen_canvas_surface_manager.cc
+++ b/content/browser/renderer_host/offscreen_canvas_surface_manager.cc
@@ -27,6 +27,18 @@ OffscreenCanvasSurfaceManager* OffscreenCanvasSurfaceManager::GetInstance() {
   return g_manager.Pointer();
 }
 
+void OffscreenCanvasSurfaceManager::OnSurfaceCreated(
+    const cc::SurfaceId& surface_id,
+    const gfx::Size& frame_size,
+    float device_scale_factor) {
+  auto surface_iter =
+      registered_surface_instances_.find(surface_id.frame_sink_id());
+  if (surface_iter == registered_surface_instances_.end())
+    return;
+  OffscreenCanvasSurfaceImpl* surfaceImpl = surface_iter->second;
+  surfaceImpl->OnSurfaceCreated(surface_id, frame_size, device_scale_factor);
+}
+
 void OffscreenCanvasSurfaceManager::RegisterOffscreenCanvasSurfaceInstance(
     cc::FrameSinkId frame_sink_id,
     OffscreenCanvasSurfaceImpl* surface_instance) {