Always set current_state_ in SyncSetupFlow::Adance()
Always set current_state_ in SyncSetupFlow::Adance()

Change-Id: I89afdbdf63a68bc9cdcc06beb13dcb166ab0a740

BUG=chromium-os:24622
TEST=See issue


Review URL: http://codereview.chromium.org/8968034

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@116505 0039d316-1c4b-4281-b951-d872f2087c98

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