[DevTools] Preserve DevTools window when remote connection is lost.

[DevTools] Preserve DevTools window when remote connection is lost.

BUG=456547
Committed: https://crrev.com/0d3f0b88b3700e1979d0b7af999269e58261c9a2
Cr-Commit-Position: refs/heads/master@{#315292}

[dgozman, 2015-02-09 10:45:54]

dgozman@chromium.org changed reviewers:
+ pfeldman@chromium.org

[dgozman, 2015-02-09 10:45:54]

Take a look please.

[pfeldman, 2015-02-09 10:52:20]

lgtm

[dgozman, 2015-02-09 11:06:16]

The CQ bit was checked by dgozman@chromium.org

[commit-bot: I haz the power, 2015-02-09 11:06:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/906223003/1

[commit-bot: I haz the power, 2015-02-09 13:07:17]

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

[commit-bot: I haz the power, 2015-02-09 13:07:20]

Try jobs failed on following builders:
  ios_dbg_simulator on tryserver.chromium.mac (JOB_TIMED_OUT, no build URL)
  ios_rel_device_ng on tryserver.chromium.mac (JOB_TIMED_OUT, no build URL)
  ios_rel_device_ninja_ng on tryserver.chromium.mac (JOB_TIMED_OUT, no build
URL)
Timed out jobs are not retried to avoid causing additional load on the builders
with large pending queues.

[dgozman, 2015-02-09 13:30:29]

The CQ bit was checked by dgozman@chromium.org

[commit-bot: I haz the power, 2015-02-09 13:31:32]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/906223003/1

[commit-bot: I haz the power, 2015-02-09 14:00:04]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-09 14:00:36]

Patchset 1 (id:??) landed as
https://crrev.com/0d3f0b88b3700e1979d0b7af999269e58261c9a2
Cr-Commit-Position: refs/heads/master@{#315292}