Needed by Chromium 33.
The only reported issue is with dev-python/pillow (bug 499914). Doesn't seem like a blocker to me.
Arches please go ahead, the target is =media-libs/libwebp-0.4.0
amd64 stable
x86 stable
Stable for HPPA.
ppc stable
arm stable
ia64 stable
sparc stable
ppc64 stable
alpha stable. Closing.