layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x600
  RenderBlock {HTML} at (0,0) size 800x600
    RenderBody {BODY} at (8,8) size 784x584
      RenderImage {IMG} at (0,0) size 20x20
      RenderText {#text} at (20,6) size 752x19
        text run at (20,6) width 752: " This test verifies that starting a subresource load from an unload handler does not cause crashes or assertion failures."
      RenderText {#text} at (0,0) size 0x0
