Reapply "Rename mappedBy to map."

This reverts commit r17907.

TBR.

Review URL: https://codereview.chromium.org//12090093

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@17918 260f80e4-7a28-3924-810f-c04153c831b5
1 file changed
tree: 1dd98094bf81b269775648edf398dbd217071145
  1. lib/
  2. test/
  3. pubspec.yaml