[Whale] Open cover when start buttons are released before cover closed.

When pushing starting buttons then releasing them fast, the cover should
open immediately.

BUG=chrome-os-partner:34544
TEST=test on Whale:
   1.press start buttons
   2.release start buttons fast
   3.expect cover opens immediately.

Change-Id: I526135b55d2d4e082d32222f57e707eaea3cef22
Reviewed-on: https://chromium-review.googlesource.com/236251
Reviewed-by: Dean Liao <deanliao@chromium.org>
Tested-by: Dean Liao <deanliao@chromium.org>
Commit-Queue: alastair jiang <alastair.jiang@quantacn.com>
Tested-by: alastair jiang <alastair.jiang@quantacn.com>
1 file changed