Whether the symbol is built-in can be easily determined from the
SymbolType stored in the symbol, it doesn't need to be returned
separately. The sameScope value that could be returned from
TSymbolTable::find was never used, so that can be removed as well.
BUG=angleproject:2267
TEST=angle_unittests
Change-Id: I06958741ebec67d496f830a83b4f6f1359632f45
Reviewed-on: https://chromium-review.googlesource.com/891021Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
