commit f46329f8395fdd34a43af702aaaa7b5ccf9768df
author rchlodnicki@opera.com <rchlodnicki@opera.com@bbb929c8-8fbe-4397-9dbb-9b2b20218538> Thu Mar 20 16:48:29 2014
committer rchlodnicki@opera.com <rchlodnicki@opera.com@bbb929c8-8fbe-4397-9dbb-9b2b20218538> Thu Mar 20 16:48:29 2014
tree a8bab00281d4b136c8e48be3b3873150f4f3e8bb
parent 209205ef9ac3a27c14569ebbe9fc16edb173da22

Do not trigger new history entry if iframe URL doesn't change

When URL of an iframe changes from "unset" to "set", we don't want to
create new history entry. This worked for URLs without fragment
identifier but failed with it present.

This change takes the idea from the old code, before it was rewritten
in https://codereview.chromium.org/126453005

BUG=353096

Review URL: https://codereview.chromium.org/201773002

git-svn-id: svn://svn.chromium.org/blink/trunk@169665 bbb929c8-8fbe-4397-9dbb-9b2b20218538