NavigationAction should not retain Event.

NavigationAction should not retain Event.

NavigationAction class before this patch had a RefPtr<Event> as its member. The event retained the previous document longer than necessary, resulting in a soft leak. This patch removes the member from the NavigationAction class and replaces it with DOMTimeStamp of the event which is the only information may be retrieved afterward.

BUG=None

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=169753

[kouhei (in TOK), 2014-03-21 11:41:04]

Would you take a look?

[haraken, 2014-03-21 11:49:24]

LGTM

[kouhei (in TOK), 2014-03-21 11:56:34]

+japhet

[Nate Chapin, 2014-03-21 16:21:16]

On 2014/03/21 11:56:34, kouhei wrote:
> +japhet

LGTM

[kouhei (in TOK), 2014-03-21 16:22:00]

Thanks for review!

[kouhei (in TOK), 2014-03-21 16:22:04]

The CQ bit was checked by kouhei@chromium.org

[commit-bot: I haz the power, 2014-03-21 16:22:13]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/kouhei@chromium.org/206453010/20001

[commit-bot: I haz the power, 2014-03-21 16:23:24]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-03-21 16:23:25]

Try jobs failed on following builders:
  tryserver.blink on mac_blink_rel

[kouhei (in TOK), 2014-03-21 16:31:08]

The CQ bit was checked by kouhei@chromium.org

[commit-bot: I haz the power, 2014-03-21 16:31:13]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/kouhei@chromium.org/206453010/20001

[commit-bot: I haz the power, 2014-03-21 16:53:48]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-03-21 16:53:49]

Try jobs failed on following builders:
  tryserver.blink on linux_blink_rel

[kouhei (in TOK), 2014-03-21 16:55:08]

The CQ bit was checked by kouhei@chromium.org

[commit-bot: I haz the power, 2014-03-21 16:55:17]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/kouhei@chromium.org/206453010/20001

[kouhei (in TOK), 2014-03-21 16:55:22]

The CQ bit was unchecked by kouhei@chromium.org

[kouhei (in TOK), 2014-03-21 17:01:12]

The CQ bit was checked by kouhei@chromium.org

[commit-bot: I haz the power, 2014-03-21 17:01:17]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/kouhei@chromium.org/206453010/40001

[commit-bot: I haz the power, 2014-03-21 18:01:24]

Change committed as 169753