Fix crash in PPB_FileChooser_Dev proxy.

Fix crash in PPB_FileChooser_Dev proxy.
BUG=100419
TEST=manual
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=105891

[brettw, 2011-10-15 00:22:21]

lgtm

[commit-bot: I haz the power, 2011-10-15 00:29:28]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/bbudge@chromium.org/8298017/1

[commit-bot: I haz the power, 2011-10-15 05:06:18]

The commit queue went berserk retrying too often for a
seemingly flaky test. Builder is mac_rel, revision is 105642, job name
was 8298017-1 (retry) (previous was lost) (previous was lost) (retry).

[commit-bot: I haz the power, 2011-10-15 12:38:53]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/bbudge@chromium.org/8298017/1

[commit-bot: I haz the power, 2011-10-15 15:27:36]

The commit queue went berserk retrying too often for a
seemingly flaky test. Builder is mac_rel, revision is 105663, job name
was 8298017-1 (retry) (retry) (retry) (retry).

[commit-bot: I haz the power, 2011-10-15 17:13:28]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/bbudge@chromium.org/8298017/1

[commit-bot: I haz the power, 2011-10-15 21:10:47]

The commit queue went berserk retrying too often for a
seemingly flaky test. Builder is mac_rel, revision is 105684, job name
was 8298017-1 (retry) (retry) (retry) (retry).

[commit-bot: I haz the power, 2011-10-17 16:07:33]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/bbudge@chromium.org/8298017/1

[commit-bot: I haz the power, 2011-10-17 16:33:18]

Try job failure for 8298017-1 (retry) on win_rel for step "compile" (clobber
build).
It's a second try, previously, step "compile" failed.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_rel&nu...