Gerrit didn't do so well on this CL. What's changed in the UniformManager is:
a lot of unused stuff was pared out of the UniformDataManager
the Write methods now return the number of bytes written in the call (incl. padding)
all the "#ifdef SK_DEBUG" stuff is new to validate against the prior way of writing uniforms
Bug: skia:12466
Change-Id: I172a74273c774257f751750aef37f4bd4c4e7e7b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/463458
Reviewed-by: Greg Daniel <egdaniel@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
ef8907c69f