As discussed in IRC, we are migrating our IDL files away from the interface-level "LegacyDefaultOptionalArguments" flag and onto argument-level [Optional] or [Optional=CallWithDefaultValue] flags. This patch migrates all remaining CSS-related IDL files. It does not change any behavior, i.e. it does not make any arguments required that were previously optional, nor vice-versa.
All existing tests pass.
Created attachment 102295 [details]
Comment on attachment 102295 [details]
Clearing flags on attachment: 102295
Committed r92236: <http://trac.webkit.org/changeset/92236>
All reviewed patches have been landed. Closing bug.