Make ARM64 detection consistent.

Use only __aarch64__ and don't look for __arm64__ at all.
It turns out that clang defines both and GCC only the former.
Hence, looking only for __aarch64__ should be enough.

BUG=354405,358092

Review URL: https://codereview.chromium.org/218663003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@260671 0039d316-1c4b-4281-b951-d872f2087c98


CrOS-Libchrome-Original-Commit: e199278948cb39f04e60d9fd1a932c1427ba6416
1 file changed
tree: 9c68fbaace4943931b461d8216199f7b0c1a8709
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. ipc/
  6. mojo/
  7. testing/
  8. third_party/
  9. ui/