Remove the speech synthesis 3-second startup delay hack.

This should be committed after http://codereview.chromium.org/8511026/ lands,
which ensures TTS isn't initialized until after the Chrome OS Audio Mixer is.

BUG=chromium-os:19067
TEST=Press Ctrl+Alt+Z in the login screen to turn on accessibility, there should be a <1 second delay before you hear speech. Reboot and you should hear speech right away. Volume controls should work.

Change-Id: I73d4d53fc2dfef3a05d925d95c30cfe4ca4ba4ae
Reviewed-on: https://gerrit.chromium.org/gerrit/11415
Reviewed-by: Daniel Erat <[email protected]>
Tested-by: Dominic Mazzoni <[email protected]>
1 file changed