tree ebe7c7e7ea3485f78546635db287abb92937517f
parent e6834f345812b5d0f2e8a4e77095cf8a73bdc96f
author Kevin Moore <kevmoo@google.com> 1440724441 -0700
committer Kevin Moore <kevmoo@google.com> 1440724441 -0700

Eliminate dart2js warning about overriding `==`, but not `hashCode`.

Closes dart-lang/source_spandart-lang/source_span#5

R=nweiz@google.com

Review URL: https://codereview.chromium.org//1315423002 .