Move IDMap from base/ to common/

Nothing in base/ uses it, and I'm going to make some non-trivial changes to it.

TEST=none
http://crbug.com/19202

Review URL: http://codereview.chromium.org/164428

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@23243 0039d316-1c4b-4281-b951-d872f2087c98


CrOS-Libchrome-Original-Commit: a932ea9e0dd159ee9b57a334f3c0fde55fcce98f
2 files changed
tree: a943445b7311cb120972d033031a157c024bf447
  1. base/
  2. build/
  3. ipc/
  4. testing/