Move HashMetricName to base namespace.

New code that will reside in base will need access to
these methods. (cl/1471073007)

Depends on
https://codereview.chromium.org/1471073010

BUG=546019

Review URL: https://codereview.chromium.org/1476633003

Cr-Commit-Position: refs/heads/master@{#362244}


CrOS-Libchrome-Original-Commit: 502b229004bece63acb26aa53888626fddd0fccb
5 files changed
tree: 725ea9f991c8c3e6e47108dfda024acdbcf4a85e
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/