tree 160cc9908c916dae2acea078040c1dbf4e8972b8
parent c06482460644764a7761bb2e5413e7ef62389a77
author Kasper Nilsson <kaspern@google.com> 1496793562 -0700
committer Kasper Nilsson <kaspern@google.com> 1496795132 -0700

Improve a11y for diff viewing

Adds an aria-label to added and removed rows marking the row as "added"
or "removed" for screen readers. As part of this change, the <tr>
elements that make up the diff are now focusable.

Test plan:
- Somewhat included as a part of testing this functionality is the use
of WCT's a11ySuite function[1]. This will be introduced in a later
change.

[1] https://goo.gl/P15eE6

Bug: Issue 6435
Change-Id: I676fc171d404ca6e8e9276965192b1452595fa61