Add user event logging for clear all button
Bug: 72222505

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Verified

UserEvent: action:TAP
UserEvent:  Source child:CLEAR_ALL_BUTTON
UserEvent:  Elapsed container 8142 ms, session 11322 ms, action 0 ms
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Change-Id: I3ace51c30129728017c5eb198c52ab1bfd94c0ac
2 files changed