The power button double tap gesture retrieves the package name
through keyguard's camera intents. Many devices do not ship a
GoogleCamera by default, so setting config_cameraGesturePackage
in overlay causes packageToLaunch to be null, thus breaking the
power button double tap gesture.
Test: adb shell dumpsys activity service com.android.systemui | grep -C3 'Camera gesture'
Signed-off-by: Chenyang Zhong <zhongcy95@gmail.com>
Change-Id: I61b3bf54b2375439297d0d0d39d924565886dec3