Skip EnsureMinimumVisibility test on win_ash(win8)

BUG=none
TBR=sky@chromium.org

Review URL: https://codereview.chromium.org/56313002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@232431 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 232431
[cros multi-profile] Some mouse/touchpad prefs are only initialized for primary user.

* kTapToClickEnabled
* kTapDraggingEnabled
* kEnableTouchpadThreeFingerClick
* kNaturalScroll
* kMouseSensitivity
* kTouchpadSensitivity
* kPrimaryMouseButtonRight
* kTouchHudProjectionEnabled

BUG=293121

Review URL: https://codereview.chromium.org/48923006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@232432 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 232432