[PATCH 4310/7508] Fix source owneship overlap.
[PATCH 4310/7508] Fix source owneship overlap.

RB_ID=284203

(sapling split of e33476540a3bfbfb93fc6e6a50c91a1f498f1d0d)

nkhuyu/commons,abel-von/commons,pombredanne/commons,ericzundel/commons,cevaris/commons,WCCCEDU/twitter-commons,atollena/commons,VaybhavSharma/commons,pombredanne/commons,abel-von/commons,Yasumoto/commons,brutkin/commons,abel-von/commons,WCCCEDU/twitter-commons,jsirois/commons,nkhuyu/commons,VaybhavSharma/commons,pombredanne/commons,jsirois/commons,VaybhavSharma/commons,VaybhavSharma/commons,atollena/commons,brutkin/commons,ericzundel/commons,jsirois/commons,Yasumoto/commons,brutkin/commons,cevaris/commons,WCCCEDU/twitter-commons,atollena/commons,cevaris/commons,atollena/commons,Yasumoto/commons,cevaris/commons,Yasumoto/commons,jsirois/commons,VaybhavSharma/commons,atollena/commons,Yasumoto/commons,nkhuyu/commons,abel-von/commons,abel-von/commons,ericzundel/commons,cevaris/commons,pombredanne/commons,nkhuyu/commons,WCCCEDU/twitter-commons,ericzundel/commons,WCCCEDU/twitter-commons,nkhuyu/commons,brutkin/commons,pombredanne/commons,ericzundel/commons,brutkin/commons,jsirois/commons