Fix chromedriver build issues in ozone meta platform

BUG=357089

Review URL: https://codereview.chromium.org/214513002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@261353 0039d316-1c4b-4281-b951-d872f2087c98
Wait for child frames to load, by counting Page.frame(Started|Stopped)Loading events
Don't apply this fix for build number 1916 and older

BUG=

Review URL: https://codereview.chromium.org/216603007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@261667 0039d316-1c4b-4281-b951-d872f2087c98