Make Checked* functions better align with GCC/Clang intrinsics

This switches around the return types and out params.

BUG=613003

Review-Url: https://codereview.chromium.org/2480953002
Cr-Commit-Position: refs/heads/master@{#430511}


CrOS-Libchrome-Original-Commit: 216b62a9bb39c9b6e5936d90b8085c300843bd9c
3 files changed
tree: 015f52969dfcf476c365dd0529e8c3b525af9680
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/