GitLab

Previously adb uses a random port number for forwarding devtools port to Android device.
It makes difficult to filter packages based on port number. Now we can specify the port number via chromeOption.

Bug: chromedriver:3598
Change-Id: Ib8de0b3abfc7f5c66898739314d552c85852680f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2433746Reviewed-by: Shengfa Lin <shengfa@google.com>
Reviewed-by: John Chen <johnchen@chromium.org>
Commit-Queue: Shengfa Lin <shengfa@google.com>
Cr-Commit-Position: refs/heads/master@{#812479}