AccumulatedVisualContext Tree:
  [1] scroll_frame_id=1 (PaintableWithLines(BlockContainer<PRE>#out))
    [2] clip=[10,10 400x200] (PaintableWithLines(BlockContainer<DIV>.branch))
      [3] clip=[11,11 193x198] (PaintableWithLines(BlockContainer(anonymous)))
        [4] transform=[0.9961947,-0.08715574,0.08715574,0.9961947,0,0] origin=(91,56) (PaintableWithLines(BlockContainer<DIV>.leaf.leaf-a))
        [5] transform=[0.9,0,0,0.9,0,0] origin=(91,141) (PaintableWithLines(BlockContainer<DIV>.leaf.leaf-b))
      [6] clip=[216,11 193x198] (PaintableWithLines(BlockContainer(anonymous)))
        [7] transform=[1,0,0,1,10,0] origin=(296,56) (PaintableWithLines(BlockContainer<DIV>.leaf.leaf-c))
        [8] transform=[1,0,0,1,0,10] origin=(296,141) (PaintableWithLines(BlockContainer<DIV>.leaf.leaf-d))

DisplayList:
SaveLayer@0
  CompositorWheelHitTestTarget@0 target_scroll_frame_index=0 rect=[0,0 800x600]
  CompositorWheelHitTestTarget@1 target_scroll_frame_index=0 rect=[0,0 800x225]
  CompositorWheelHitTestTarget@1 target_scroll_frame_index=0 rect=[8,8 784x204]
  CompositorWheelHitTestTarget@1 target_scroll_frame_index=0 rect=[8,8 404x204]
  FillPath@1 path_bounding_rect=[8,8 404x204]
  CompositorWheelHitTestTarget@2 target_scroll_frame_index=0 rect=[10,10 195x200]
  FillPath@2 path_bounding_rect=[10,10 195x200]
  CompositorWheelHitTestTarget@2 target_scroll_frame_index=0 rect=[215,10 195x200]
  FillPath@2 path_bounding_rect=[215,10 195x200]
  CompositorWheelHitTestTarget@4 target_scroll_frame_index=0 rect=[16,16 150x80]
  FillRect@4 rect=[16,16 150x80] color=rgb(255, 0, 0)
  DrawGlyphRun@4 rect=[16,16 15x18] translation=[16,29.796875] color=rgb(0, 0, 0)
  CompositorWheelHitTestTarget@5 target_scroll_frame_index=0 rect=[16,101 150x80]
  FillRect@5 rect=[16,101 150x80] color=rgb(0, 128, 0)
  DrawGlyphRun@5 rect=[16,101 10x18] translation=[16,114.796875] color=rgb(0, 0, 0)
  CompositorWheelHitTestTarget@7 target_scroll_frame_index=0 rect=[221,16 150x80]
  FillRect@7 rect=[221,16 150x80] color=rgb(0, 0, 255)
  DrawGlyphRun@7 rect=[221,16 11x18] translation=[221,29.796875] color=rgb(0, 0, 0)
  CompositorWheelHitTestTarget@8 target_scroll_frame_index=0 rect=[221,101 150x80]
  FillRect@8 rect=[221,101 150x80] color=rgb(255, 165, 0)
  DrawGlyphRun@8 rect=[221,101 12x18] translation=[221,114.796875] color=rgb(0, 0, 0)
Restore@0

