The test case uses `background-color` in a table, so I suspect this function was called by `TYPE_TABLE_BACKGROUND_COLOR` [1]. Maybe we should add this display item into LayerAnimationInfo.h. [1] https://searchfox.org/mozilla-central/rev/2c912888e3b7ae4baf161d98d7a01434f31830aa/layout/painting/nsDisplayList.h#4795
Bug 1538752 Comment 1 Edit History
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The test case uses `background-color` in a table, so I suspect this function was called by `TYPE_TABLE_BACKGROUND_COLOR` [1]. Maybe we should add this display item type into LayerAnimationInfo.h. [1] https://searchfox.org/mozilla-central/rev/2c912888e3b7ae4baf161d98d7a01434f31830aa/layout/painting/nsDisplayList.h#4795