bottomsheet: closing through escape key isn't working when clicking on backdrop.

[auty]

Repro:

• Navigate to https://material.angularjs.org/1.0.6/demo/bottomSheet
• Click "Show as Grid"
• Click outside
• Click esc
• Click down arrow

Actual:

• Nothing happens
• Need to reload page to remove bottom sheet

Expected:

• The Bottom Sheet should close

This occurs using Chrome on Mac.

[devversion]

The Show as Grid demo is configured to disable the outside click. So if you click outside and then hit ESC nothing won't happen, because the bottomsheet isn't focused anymore.

So to summarize - the actual bug, is the focus for the ESC keydown.