tree 50ff2187d09558f1b6888be545ab2c8274091f18
parent cbb2aad7a8aced67d2d97e03d8cd78b1a843290c
author Eric Laurent <elaurent@google.com> 1364247490 -0700
committer Eric Laurent <elaurent@google.com> 1364247490 -0700

ToneGenerator: optimize silent tone

Do not create an AudioTrack and start playback when a silent
tone is requested to ToneGenerator.

Bug 7946399

Change-Id: Ib9282871a56f7a862af7d1504ce3fbd7c18e34e2