Don't use --enable-software-compositing flag in virtual test.

It's now enabled by default on all platforms and unnecessary.

BUG=350141

Review URL: https://codereview.chromium.org/235243005

git-svn-id: svn://svn.chromium.org/blink/trunk@171708 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove setEditableLinkBehaviorNeverLive (part 2).

The last call to this is removed in this Chromium CL:
https://codereview.chromium.org/236163005/

BUG=362961

Review URL: https://codereview.chromium.org/239643002

git-svn-id: svn://svn.chromium.org/blink/trunk@171709 bbb929c8-8fbe-4397-9dbb-9b2b20218538