Up process priority during login.

We're seeing replicated characters during login which cause login failures. The general suspicion is autox being descheduled between KeyPress and KeyRelease events. Testing with increased priority caused the login failures to disappear. Sadly the occassional login timeout error seems unaffected.

Also removed Tab between fields per old todo since Alt+P is available to focus the password field now.

Change-Id: I44a431df1d27831075c5a9f198f8ee5848f586f5

BUG=chromium-os:12265
TEST=Ran 30 login_LoginSuccess tests and a couple bvt runs.

Review URL: http://codereview.chromium.org/6546062
1 file changed