Web Inspector: Fix ObjectTree Map styling, key/value look cramped

[Joseph Pecoraro]

* SUMMARY
Fix ObjectTree Map styling, key/value look cramped.

* TEST
<script>
var map = new Map;
map.set("HTMLFooElement", {className:"HTMLElement", size:1234, count:120});
map.set("HTMLBarElement", {className:"HTMLElement", size:1234, count:120});
map.set("HTMLDivElement", {className:"HTMLElement", size:1234, count:120});
map.set("HTMLSpanElement", {className:"HTMLElement", size:1234, count:120});
map.set("HTMLAnchorElement", {className:"HTMLElement", size:1234, count:120});
map.set("HTMLArticleElement", {className:"HTMLElement", size:1234, count:120});
console.log(map);
</script>

* STEPS TO REPRODUCE
1. Load test case
2. Show console
3. Expand Map
  => "key" and "value" look cramped

[Radar WebKit Bug Importer]

<rdar://problem/25250519>

[Joseph Pecoraro]

Created attachment 274464 [details]
[PATCH] Proposed Fix

[WebKit Commit Bot]

Comment on attachment 274464 [details]
[PATCH] Proposed Fix

Clearing flags on attachment: 274464

Committed r198452: <http://trac.webkit.org/changeset/198452>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.