Replace browser_backend.options with browser_backend.find_options.

All the options used by browser_backends need to be moved from finder_options to browser options.

BUG=269131
TEST=trybot

Review URL: https://chromiumcodereview.appspot.com/23664002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@220665 0039d316-1c4b-4281-b951-d872f2087c98
7 files changed