Correct reporting of compressed texture formats and shader binary formats

Correct reporting of compressed texture formats and shader binary formats

NOTE: There's an issue here that before this change
the largest number of values returned by glGetXXX was 4
and now it's undefined. The issue will come up if there
are ever more than 15 because the GLES2Implementation
only currently handles 15.

See GLES2Implementation::kMaxSizeOfSimpleResult.
http://code.google.com/p/chromium/issues/detail?id=88227

TEST=unit tests
BUG=none

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=91781

[apatrick_chromium, 2011-07-07 21:14:32]

LGTM