Add hg username to merge-tool script. Review URL: http://codereview.chromium.org/7861012
Add hg username to merge-tool script.
Review URL: http://codereview.chromium.org/7861012

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@6670 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,nacl-webkit/native_client