input: simulate long press properly

input: simulate long press properly

The original implementation of long press sends two ACTION_DOWN events
which would be interpreted as a double tap. For example, sending
a long press POWER key will launch the camera:

11-21 16:27:37.320  2223  2223 I Input   : injectKeyEvent: KeyEvent { action=ACTION_DOWN, keyCode=KEYCODE_POWER, scanCode=0, metaState=0, flags=0x0, repeatCount=0, eventTime=39641, downTime=39641, deviceId=-1, source=0x101 }
11-21 16:27:37.321  2223  2223 I Input   : injectKeyEvent: KeyEvent { action=ACTION_DOWN, keyCode=KEYCODE_POWER, scanCode=0, metaState=0, flags=0x80, repeatCount=1, eventTime=39641, downTime=39641, deviceId=-1, source=0x101 }
11-21 16:27:37.322  1411  1565 I GestureLauncherService: Power button double tap gesture detected, launching camera. Interval=0ms
11-21 16:27:37.322  2223  2223 I Input   : injectKeyEvent: KeyEvent { action=ACTION_UP, keyCode=KEYCODE_POWER, scanCode=0, metaState=0, flags=0x0, repeatCount=0, eventTime=39641, downTime=39641, deviceId=-1, source=0x101 }

This is unexpected and incorrect.

Just simulate the long press by delaying ACTION_UP one second.