Fade-out sound players even when idle or buffering #1601

Job	Run time
Lint	4m 3s
Lint	4m 3s
Lint	4m 3s
Validate Gradle Wrapper	6s
Validate Gradle Wrapper	6s
Validate Gradle Wrapper	6s
API Client Unit Tests	1m 1s
API Client Unit Tests	1m 1s
API Client Unit Tests	1m 1s
App Unit Tests	5m 55s
App Unit Tests	5m 55s
App Unit Tests	5m 55s
App UI tests (32, aosp_atd, FreeDebug)	12m 5s
App UI tests (32, aosp_atd, FreeDebug)	12m 5s
App UI tests (32, aosp_atd, FreeDebug)	12m 5s
App UI tests (32, google_atd, FullDebug)	10m 21s
App UI tests (32, google_atd, FullDebug)	15m 34s
App UI tests (32, google_atd, FullDebug)	19m 26s
Deploy App - GitHub	0s
Deploy App - GitHub	0s
Deploy App - GitHub	0s
Deploy App - Play Store	0s
Deploy App - Play Store	0s
Deploy App - Play Store	0s
	1h 54m 51s

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