Revert "Fix regression in commit 9d63be651."

This reverts commit 2ec21bd41efca4b9e6ecb6f76bc3ce5f7c9ab799.
Fix regression in commit 9d63be6.

The new filters were being added in front of all of the normalizing
filters, but they must come after. This was noticed because CPU video
filters were distorting the chroma planes with GPU processing enabled.
However, this problem affected all filters.