Enable unneeded-internal-declaration compiler warning No longer have issues with unneeded internal declarations now that Tokenizer.cpp has been updated so re-enable compiler warning to catch future issues. BUG:angleproject:2451 Test: build Change-Id: I30daadc8c7374bcae753a7e69cb9a72855a1f548 Reviewed-on: https://chromium-review.googlesource.com/1007965 Commit-Queue: Courtney Goeltzenleuchter <courtneygo@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org>