Song Hu
1d73eaf431
Factor freqeuncy and mimetype of past sharings, foreground app into
sharesheet model. Promote most frequent sharable apps to tackle cold
start issue when device doesn't hold enough sharing history.
Bug: 149822311
Test: manual test Sharesheet ranking on device
Test: atest com.android.server.people.prediction.ShareTargetPredictorTest
Test: atest com.android.server.people.prediction.SharesheetModelHelperTest
Test: atest com.android.server.people.data.UsageStatsQueryHelperTest
Change-Id: I6eb764448c0619cbc3b320b5f6432f559d1a15e1