Remove MaxSharedMemorySize() function from SysInfo

It is not used anywhere, and is only supported on some platforms. In
addition, it synchronously reads a file during Zygote startup.

Last use was removed in 2014: 1cf03f7f0c2eff4e34b6d6e4a088dcbd762ee9b9

BUG=

Review-Url: https://codereview.chromium.org/2054593002
Cr-Commit-Position: refs/heads/master@{#398926}


CrOS-Libchrome-Original-Commit: 6f104bf7f475f185dff31647dc911595e943df42
3 files changed
tree: 84c0c7cde61933c0a096cca19e326b6179aa3a48
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/