am dfe1cfe8: am acb3cc74: Merge "Refactor on the user history dictionary"

* commit 'dfe1cfe89861738443c318da54af4ea73cf016f1':
main
Satoshi Kataoka 2013-09-26 05:55:04 -07:00 committed by Android Git Automerger
commit beb93fb819

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