[Devtools][Regression] Fixed network film strip sometimes errored

[Devtools][Regression] Fixed network film strip sometimes errored

Fixes bug where if the overviewPane was not shown the filmStrip would
never show and throw an exception in network panel.

Offending patch: https://codereview.chromium.org/2857833002/

R=pfeldman
BUG=723659
Review-Url: https://codereview.chromium.org/2890943003
Cr-Commit-Position: refs/heads/master@{#472651}
Committed: https://chromium.googlesource.com/chromium/src/+/1cb9864601dad078281ff870a23b308d2e88cb50

[allada, 2017-05-17 21:07:41]

PTL

[pfeldman, 2017-05-17 21:28:46]

lgtm

[allada, 2017-05-17 21:29:17]

The CQ bit was checked by allada@chromium.org

[commit-bot: I haz the power, 2017-05-17 21:31:14]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-05-17 23:56:22]

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

[commit-bot: I haz the power, 2017-05-17 23:56:23]

Try jobs failed on following builders:
  linux_chromium_rel_ng on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[allada, 2017-05-18 00:04:46]

The CQ bit was checked by allada@chromium.org

[commit-bot: I haz the power, 2017-05-18 00:05:48]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-05-18 03:49:17]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1495065886316330, "parent_rev":
"53e28ff5f595446f0ed27cbc7103042c6cd76a5f", "commit_rev":
"1cb9864601dad078281ff870a23b308d2e88cb50"}

[commit-bot: I haz the power, 2017-05-18 03:49:36]

Description was changed from

==========
[Devtools][Regression] Fixed network film strip sometimes errored

Fixes bug where if the overviewPane was not shown the filmStrip would
never show and throw an exception in network panel.

Offending patch: https://codereview.chromium.org/2857833002/

R=pfeldman
BUG=723659
==========

to

==========
[Devtools][Regression] Fixed network film strip sometimes errored

Fixes bug where if the overviewPane was not shown the filmStrip would
never show and throw an exception in network panel.

Offending patch: https://codereview.chromium.org/2857833002/

R=pfeldman
BUG=723659

Review-Url: https://codereview.chromium.org/2890943003
Cr-Commit-Position: refs/heads/master@{#472651}
Committed:
https://chromium.googlesource.com/chromium/src/+/1cb9864601dad078281ff870a23b...
==========

[commit-bot: I haz the power, 2017-05-18 03:49:37]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/1cb9864601dad078281ff870a23b...