Generate globally (cross-process) unique IDs for memory tracing dumps

Refactoring the hashing code to use it in memory_dump_manager to make
the guid unique.

BUG=462931

Review URL: https://codereview.chromium.org/994133002

Cr-Commit-Position: refs/heads/master@{#325071}


CrOS-Libchrome-Original-Commit: 4498d8f0a9d899c638eb2c8be25bcb33cc4a2082
3 files changed
tree: 6cb0bab17404a6e46f541735522560bf0de0cde1
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/