Revert 236107 "Rotate vk display 180 for easier experiment"

> Rotate vk display 180 for easier experiment
> 
> 
> BUG=319493
> 
> Review URL: https://codereview.chromium.org/62103019

TBR=bshe@chromium.org

Review URL: https://codereview.chromium.org/77393002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236110 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236110
[rAC, OSX] Validate CVV in CVV challenge

CVV challenge fields need to be validated before accepting.

BUG=315212
TEST=Force CVV challenge, enter invalid CVV, click 'Continue'/'Validate'. The CVV field should be highlighted, the dialog should not be dismissed.
R=isherman@chromium.org

Review URL: https://codereview.chromium.org/64553018

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236111 0039d316-1c4b-4281-b951-d872f2087c98
Allow 1.0f scale factor on pixel

BUG=246274
TEST=covered by test

Review URL: https://codereview.chromium.org/72903002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236112 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236112