Restore AddMergeIntoSvn() method I removed in https://code.google.com/p/skia/source/detail?r=4701 It's still needed by the housekeeping bot.
Restore AddMergeIntoSvn() method I removed in https://code.google.com/p/skia/source/detail?r=4701
It's still needed by the housekeeping bot.

TBR=rmistry
Review URL: https://codereview.appspot.com/6430059

git-svn-id: 32fc27f4dcfb6c0385cd9719852b95fe6680452d@4703 2bbb7eff-a529-9590-31e7-b0007b416f81

google/skia-buildbot,google/skia-buildbot,Tiger66639/skia-buildbot,google/skia-buildbot,Tiger66639/skia-buildbot,Tiger66639/skia-buildbot,Tiger66639/skia-buildbot,Tiger66639/skia-buildbot,Tiger66639/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,Tiger66639/skia-buildbot,google/skia-buildbot,google/skia-buildbot