Disable flaky WebContentsViewAuraTest.OverscrollNavigation[WithTouchHandler] on Win.

BUG=305722
TEST=NONE
R=mek@chromium.org, sadrul@chromium.org
TBR=jochen@chromium.org

Review URL: https://codereview.chromium.org/26727002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@227771 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 227771