Fix inspector/styles/pseudo-state-change.html flakiness on WinXP

Drive-by: increase the number of tested steps

R=aandrey, vsevik
BUG=324369

Review URL: https://codereview.chromium.org/96483002

git-svn-id: svn://svn.chromium.org/blink/trunk@162882 bbb929c8-8fbe-4397-9dbb-9b2b20218538
[websql] when aborting transactions, abort them on the database thread

We don't know which thread the dtor will run on, however, we need to
cancel the transaction on the database thread.

BUG=none
R=mkwst@chromium.org

Review URL: https://codereview.chromium.org/96543002

git-svn-id: svn://svn.chromium.org/blink/trunk@162883 bbb929c8-8fbe-4397-9dbb-9b2b20218538