v8.runtimestats.browsing_mobile benchmark failed on Android Nexus5 Perf bot on this build: https://build.chromium.org/p/chromium.perf/builders/Android%20Nexus5%20Perf%20%282%29/builds/5098

It fails with the following error:
AdbCommandFailedError: (device: 049976abf0c9eee3) adb shell '( p=org.chromium.chrome;if [[ "$(ps)" = *$p* ]]; then am force-stop $p; fi );echo %$?': failed with exit status 255 and output:
- cannot bind 'tcp:5037': Address already in use
- ADB server didn't ACK
- * failed to start daemon *
- error: protocol fault (couldn't read status): Connection reset by peer
- adb server is out of date.  killing...