Two things broke the clang ast dump parser: - clang -cc1 didn't parse headers in iPhone mode automatically anymore. Add the -triple argument to force it. - Source positions in the dumps can now contain <scratch space>. Change-Id: I5d561f781355021f60c94d59e20bf1c1eee76d2a Reviewed-on: https://go-review.googlesource.com/c/159678 Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>