FrameSinkIds use to WindowIds in window server, Process ID/Route ID in renderer

content/browser/frame_host/render_widget_host_view_child_frame.cc

Index: content/browser/frame_host/render_widget_host_view_child_frame.cc
diff --git a/content/browser/frame_host/render_widget_host_view_child_frame.cc b/content/browser/frame_host/render_widget_host_view_child_frame.cc
index 8c3d1c4cf53a020d08874634b787b610ea431c44..8d03e384cfb5bbe894bd714c9d7d3628ac271f47 100644
--- a/content/browser/frame_host/render_widget_host_view_child_frame.cc
+++ b/content/browser/frame_host/render_widget_host_view_child_frame.cc
@@ -42,7 +42,9 @@ namespace content {
 RenderWidgetHostViewChildFrame::RenderWidgetHostViewChildFrame(
     RenderWidgetHost* widget_host)
     : host_(RenderWidgetHostImpl::From(widget_host)),
-      frame_sink_id_(AllocateFrameSinkId()),
+      frame_sink_id_(
+          base::checked_cast<uint32_t>(widget_host->GetProcess()->GetID()),
+          base::checked_cast<uint32_t>(widget_host->GetRoutingID())),
       next_surface_sequence_(1u),
       last_compositor_frame_sink_id_(0),
       current_surface_scale_factor_(1.f),