layer at (0,0) size 800x600
  LayoutView at (0,0) size 800x600
layer at (0,0) size 800x600
  LayoutBlockFlow {HTML} at (0,0) size 800x600
    LayoutBlockFlow {BODY} at (8,8) size 784x584
      LayoutBlockFlow {P} at (0,0) size 784x36
        LayoutText {#text} at (0,0) size 744x35
          text run at (0,0) width 744: "This test ensures selection that crosses the shadow DOM boundary of a readonly input element cannot be made by a"
          text run at (0,18) width 79: "mouse drag."
      LayoutBlockFlow {P} at (0,52) size 784x36
        LayoutText {#text} at (0,0) size 766x35
          text run at (0,0) width 766: "To manually test, select text by a mouse drag starting in \"world\" and ending in \"hello\". Selection should not extend into"
          text run at (0,18) width 116: "the input element."
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        LayoutTextControl {INPUT} at (0,0) size 58.08x24 [bgcolor=#FFFFFF] [border: (2px inset #EEEEEE)]
        LayoutText {#text} at (58,3) size 5x17
          text run at (58,3) width 5: " "
        LayoutInline {SPAN} at (0,0) size 38x17
          LayoutText {#text} at (62,3) size 38x17
            text run at (62,3) width 38: "world"
        LayoutText {#text} at (0,0) size 0x0
layer at (10,115) size 54x18
  LayoutBlockFlow {DIV} at (2,3) size 54.08x18
    LayoutText {#text} at (0,0) size 34x17
      text run at (0,0) width 34: "hello"
selection start: position 0 of child 2 {#text} of child 5 {DIV} of body
selection end:   position 2 of child 0 {#text} of child 3 {SPAN} of child 5 {DIV} of body