Revert "Changes gl::RenderbufferStorage to rx::RenderbufferImpl" This reverts commit 9fc51d90176dcf4273cd6689968e1ca5d1c9fe16. Change-Id: I4134ebe5ef6b8f509f4cc5cc22a2d526ec43ef6d Reviewed-on: https://chromium-review.googlesource.com/226374 Reviewed-by: Shannon Woods <shannonwoods@chromium.org> Tested-by: Shannon Woods <shannonwoods@chromium.org>