Allow literal separators (') in integral/floating constants.

This was a popular request in
https://groups.google.com/a/chromium.org/forum/#!topic/cxx/zsGhgaKLmIk .

BUG=none
TEST=none

Change-Id: I9195ce31dff0b945741ff38fd7c3b8cb69ebfd8c
Reviewed-on: https://chromium-review.googlesource.com/857804
Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#529625}

CrOS-Libchrome-Original-Commit: e72b278bef9323bf1bff4eeb5dd60e8241c48881
2 files changed
tree: e9394e1217a5b72eeff9d1db865ca87e47431183
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/