DevTools: coverage polish, part 2

DevTools: coverage polish, part 2

Here comes another small batch of coverage UX fixes.

BUG=697599
Review-Url: https://codereview.chromium.org/2784993002
Cr-Commit-Position: refs/heads/master@{#460600}
Committed: https://chromium.googlesource.com/chromium/src/+/fb1ec92eac2f8a6db6d357249563ffa3fca43058

[caseq, 2017-03-29 22:19:21]

caseq@chromium.org changed reviewers:
+ alph@chromium.org, pfeldman@chromium.org

[pfeldman, 2017-03-29 22:40:34]

lgtm

[caseq, 2017-03-29 22:40:55]

The CQ bit was checked by caseq@chromium.org

[commit-bot: I haz the power, 2017-03-29 22:41:58]

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

[paulirish, 2017-03-29 23:03:31]

paulirish@chromium.org changed reviewers:
+ paulirish@chromium.org

[paulirish, 2017-03-29 23:03:32]

I like all the changes made so far. nice stuff.


Can we chunk out the calls to setGutterDecoration? 
Here's a trace of me viewing the coverage results from paulirish.com:
https://chromedevtools.github.io/timeline-viewer/?loadTimelineFromURL=https:/...

If we yielded a bit in there we'd be able to paint the file like 70% earlier.


The column behaves differently than the timelinetreeview ones. Funky alignment:
http://imgur.com/a/7KAxE

[commit-bot: I haz the power, 2017-03-30 00:39:53]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490827255795530, "parent_rev":
"27533094be842d574cfe813bdcf8f8ec1094f4b3", "commit_rev":
"fb1ec92eac2f8a6db6d357249563ffa3fca43058"}

[commit-bot: I haz the power, 2017-03-30 00:40:59]

Description was changed from

==========
DevTools: coverage polish, part 2

Here comes another small batch of coverage UX fixes.

BUG=697599
==========

to

==========
DevTools: coverage polish, part 2

Here comes another small batch of coverage UX fixes.

BUG=697599

Review-Url: https://codereview.chromium.org/2784993002
Cr-Commit-Position: refs/heads/master@{#460600}
Committed:
https://chromium.googlesource.com/chromium/src/+/fb1ec92eac2f8a6db6d357249563...
==========

[commit-bot: I haz the power, 2017-03-30 00:41:01]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/fb1ec92eac2f8a6db6d357249563...