Revert of Add support for glMapBufferRange. Use glMapBufferRange and glMapBufferSubData. (https://codereview.chromium.org/243413002/)

Reason for revert:
This is firing an assert on many of the Android debug bots

Original issue's description:
> Add support for glMapBufferRange. Use glMapBufferRange and glMapBufferSubData.
>
> BUG=skia:2402
>
> Committed: http://code.google.com/p/skia/source/detail?r=14533

git-svn-id: http://skia.googlecode.com/svn/trunk@14541 2bbb7eff-a529-9590-31e7-b0007b416f81
18 files changed