Currently the individual Keyframe objects each track a composite order, even if the user doesn't specify one on that keyframe. But the spec says:
"Each keyframe may also have a keyframe-specific composite operation that is applied to all values specified in that keyframe. The possible operations and their meanings are identical to those defined for the composite operation associated with the keyframe effect as a whole in ยง4.5.4 Effect composition. If no keyframe-specific composite operation is specified for a keyframe, the composite operation specified for the keyframe effect as a whole is used for values specified in that keyframe."
We need to add the concept of 'composite' to KeyframeEffectReadOnly and no longer always assign them in Keyframe creation.
Comment 1 by nainar@chromium.org
, Nov 16 2017