tree ff325c2c35eb855b958debf8bd66f4b5b4bea8f5
parent 4d6f0cc42caa280e1d0f9b53331cece8aa055170
author Becky Siegel <beckysiegel@google.com> 1498262908 -0700
committer Becky Siegel <beckysiegel@google.com> 1498263030 -0700

Fix related change show more calculation

Previously, there was a case where the scroll height of related changes
was greater than the offsetHeight, but only because of the bottom
margin, so no text was hidden.

This change takes that into account when computing whether or not to
display a show more button. It also switches from using hidden$ to a
computed class.

Bug: Issue 6566
Change-Id: I05a40c7637316ce1a27a1f9c4804844c17678ba4