dart-lang/spark — pull request #1406 by umop (2014-03-25 20:04:28+00:00)
Title: Outline vertical spacing (margins) and scrollbar visibility.

Fixed vertical margins by creating a third layer. `outline` now contains the outline and toggle button, `outlineContent` contains just the outline content and `outlineScrollable` contains just the scrolling component (as opposed to the container with margins). Because the toggle button needs to turn only the margin container off, I had to separate).

Also, fixed vertical scrollbar hiding.

Fixes #1340
Review @dinhviethoa
Cc @devoncarew