Make ComputedStyle::InheritFrom group independent.

In ComputedStyle::InheritFrom, we assume that the UserModify() field is
always stored in RareInheritedData. After we generate the user-modify
property, we might want to change where it is stored, so UserModify may
no longer be in RareInheritedData. This patch rearranges the logic in
the function so that UserModify can be stored in any subgroup without
breaking the code. There are no changes in behaviour.


Cr-Commit-Position: refs/heads/master@{#471095}
1 file changed