DevTools: Refactor Timeline.TimelineUIUtils.buildPicturePreviewContent to be async

DevTools: Refactor Timeline.TimelineUIUtils.buildPicturePreviewContent to be async

Review-Url: https://codereview.chromium.org/2752253003
Cr-Commit-Position: refs/heads/master@{#460473}
Committed: https://chromium.googlesource.com/chromium/src/+/b0017dec5002e248c2ed120a719d7642158e69f4

[alph, 2017-03-16 17:56:31]

alph@chromium.org changed reviewers:
+ caseq@chromium.org, dgozman@chromium.org, lushnikov@chromium.org

[dgozman, 2017-03-16 18:11:56]

lgtm

[caseq, 2017-03-16 18:13:20]

lgtm

[lushnikov, 2017-03-17 18:28:59]

beautiful! lgtm, let's land this!

[alph, 2017-03-29 17:26:11]

The CQ bit was checked by alph@chromium.org

[commit-bot: I haz the power, 2017-03-29 17:26:58]

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, 2017-03-29 18:56:18]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490808371773230, "parent_rev":
"64b8b65b733a3ac8bd0b5f707431f6d1fae20948", "commit_rev":
"b0017dec5002e248c2ed120a719d7642158e69f4"}

[commit-bot: I haz the power, 2017-03-29 18:57:01]

Description was changed from

==========
DevTools: Refactor Timeline.TimelineUIUtils.buildPicturePreviewContent to be
async
==========

to

==========
DevTools: Refactor Timeline.TimelineUIUtils.buildPicturePreviewContent to be
async

Review-Url: https://codereview.chromium.org/2752253003
Cr-Commit-Position: refs/heads/master@{#460473}
Committed:
https://chromium.googlesource.com/chromium/src/+/b0017dec5002e248c2ed120a719d...
==========

[commit-bot: I haz the power, 2017-03-29 18:57:03]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/b0017dec5002e248c2ed120a719d...