Oilpan: move NavigationScheduler's redirect actions onto the heap.

Oilpan: move NavigationScheduler's redirect actions onto the heap.

As NavigationScheduler is attached to a LocalFrame, arrange for its
ScheduledNavigation actions to be on the Oilpan heap also, so that
any of its traceable references are accurately accounted for.

R=peria,haraken
BUG=340522
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=195342

[sof, 2015-05-14 06:57:40]

sigbjornf@opera.com changed reviewers:
+ oilpan-reviews@chromium.org

[sof, 2015-05-14 06:57:41]

Please take a look.

Since LocalFrame is now on the heap (=> the NavigationScheduler part object is),
there's no reason why we can't keep these navigation continuation/action objects
on the heap also.

[peria, 2015-05-14 07:19:59]

peria@chromium.org changed reviewers:
+ peria@chromium.org

[peria, 2015-05-14 07:20:00]

LGTM
This CL is much better than mine, thanks!

[haraken, 2015-05-14 07:52:02]

LGTM

[sof, 2015-05-14 08:07:42]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2015-05-14 08:08:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1133303007/20001

[commit-bot: I haz the power, 2015-05-14 08:24:19]

Committed patchset #2 (id:20001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=195342