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yoshiki authored
The original CL (crrev.com/396402) was comitted but reverted (crrev.com/396495) due to MSAN failure (forgetting free the instance). This patch relands it with changing it with unique_ptr. BUG=615443 TEST=MSAN bot passes TBR=dewittj@chromium.org, skuhne@chromium.org This patch does: - Show the message center button on tray on the lock screen - Show the message to encourage user to log in when user opens message center on lock screen - Add SetLockedState(bool) and IsLockedState() method into MessageCenter class. - Don't make notifications read when opening the message center on lock screen - Add tests And this patch also fixes the bug that this makes blocked notifications read wrongly. BUG=599891 TEST=manually tested Committed: https://crrev.com/48c4b94a9d9eb0ae3a20ed9c05d9e77ff1a98b50 Cr-Commit-Position: refs/heads/master@{#396402} Review-Url: https://codereview.chromium.org/2025613002 Cr-Commit-Position: refs/heads/master@{#396785}
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