After r196429 TextureMapper sources are built only in ports which actually use TextureMapper, so USE(TEXTURE_MAPPER) guards in them are redundant now.
Created attachment 275021 [details] Patch
Comment on attachment 275021 [details] Patch Clearing flags on attachment: 275021 Committed r198735: <http://trac.webkit.org/changeset/198735>
All reviewed patches have been landed. Closing bug.