1000      2706     1  2 23:01 ?        00:00:52 /usr/bin/google-chrome-stable
1000      2713  2706  0 23:01 ?        00:00:00 /usr/bin/google-chrome-stable
1000      2714  2706  0 23:01 ?        00:00:00 /opt/google/chrome/chrome-sandbox /opt/google/chrome/chrome --type=zygote
1000      2715  2714  0 23:01 ?        00:00:00 /opt/google/chrome/chrome --type=zygote
1000      2719  2715  0 23:01 ?        00:00:00 /opt/google/chrome/nacl_helper
1000      2720  2715  0 23:01 ?        00:00:00 /opt/google/chrome/chrome --type=zygote
1000      2839  2706  0 23:01 ?        00:00:08 /opt/google/chrome/chrome --type=gpu-process --channel=2706.3.250838429 --supports-dual-gpus=false --gpu-driver-bug-workarounds=0,1,27 --disable-accelerated-video-decode --gpu-vendor-id=0x1002 --gpu-device-id=0x6760 --gpu-driver-vendor=ATI / AMD --gpu-driver-version=13.30
1000      2843  2839  0 23:01 ?        00:00:00 /opt/google/chrome/chrome --type=gpu-process --channel=2706.3.250838429 --supports-dual-gpus=false --gpu-driver-bug-workarounds=0,1,27 --disable-accelerated-video-decode --gpu-vendor-id=0x1002 --gpu-device-id=0x6760 --gpu-driver-vendor=ATI / AMD --gpu-driver-version=13.30
1000      3038  2720  1 23:08 ?        00:00:28 /opt/google/chrome/chrome --type=renderer --lang=en-US --force-[...very long options list]
1000      4505  4441  0 23:40 pts/0    00:00:00 grep --color=auto chrome

pkill --oldest chrome

sudo apt-get install wmctrl

wmctrl -c "Google Chrome"

sudo killall chrome