[469][Backport] Security bug 432661300

Manual cherry-pick of patch originally reviewed on
https://chromium-review.googlesource.com/c/chromium/src/+/6770199:
[Blink] Propagate OriginClean flag in PushFrame

This CL propates the OriginClean flag to the appropriate CanvasResource
when PushFrame gets called in OffscreenCanvas.

Bug: 432661300
Change-Id: Ib66273cb56f6c58f0fe27c15df9ed19e64330ea1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6770199
Reviewed-by: Mike West <[email protected]>
Reviewed-by: Jean-Philippe Gravel <[email protected]>
Reviewed-by: Vasiliy Telezhnikov <[email protected]>
Commit-Queue: Tom Van Goethem <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1488831}
Reviewed-on: https://codereview.qt-project.org/c/qt/qtwebengine-chromium/+/665070
Reviewed-by: Allan Sandfeld Jensen <[email protected]>

Author: tomvangoethem

chromium/third_party/blink/renderer/core/offscreencanvas/offscreen_canvas.cc

@@ -633,6 +633,7 @@ bool OffscreenCanvas::PushFrame(scoped_refptr<CanvasResource>&& canvas_resource,
   current_frame_damage_rect_.join(damage_rect);
   if (current_frame_damage_rect_.isEmpty() || !canvas_resource)
     return false;
+  canvas_resource->SetOriginClean(OriginClean());
   const base::TimeTicks commit_start_time = base::TimeTicks::Now();
   GetOrCreateResourceDispatcher()->DispatchFrame(
       std::move(canvas_resource), commit_start_time, current_frame_damage_rect_,