commit a13615562c710592ba289ba998294603d6638390
author sigbjornf@opera.com <sigbjornf@opera.com> Thu Mar 05 17:28:36 2015
committer sigbjornf@opera.com <sigbjornf@opera.com> Thu Mar 05 17:28:36 2015
tree fc0503d596a562cf7c69b0ca4ca0ed0cf1ac0226
parent 825a6bd59a7abf0dc05faa90db8d3315676454b6

Delay testing lifecycle observers until known to be alive.

When iterating, ContextLifecycleNotifier must be able to cope with
pointer references to ContextLifecycleObservers that may have been
destructed while iterating&notifying others.

Delay the observer type check until we've verified that the observer is
alive.

R=haraken
BUG=464285

Review URL: https://codereview.chromium.org/983713004

git-svn-id: svn://svn.chromium.org/blink/trunk@191372 bbb929c8-8fbe-4397-9dbb-9b2b20218538