First bench: Simply render from a compressed ETC1 bitmap. This is roughly
equal between compressed and uncompressed data.
Second bench: Notify the bitmap that the pixels have changed (that's right,
like a liar) to force a re-upload to the GPU. On this bench, decompressed
textures seem to inexplicably do an order of magnitude better than
compressed textures when it should be the other way around, but that
investigation is reserved for a future CL.
R=robertphillips@google.com
Author: krajcevski@google.com
Review URL: https://codereview.chromium.org/317023002
