Fixes bug where button borders are not always painted in high DPI mode.
Fixes bug where button borders are not always painted in high DPI mode.

BUG=116553
TEST=Manual

Review URL: http://codereview.chromium.org/10107019

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@133459 0039d316-1c4b-4281-b951-d872f2087c98

ropik/chromium,adobe/chromium,yitian134/chromium,yitian134/chromium,adobe/chromium,ropik/chromium,yitian134/chromium,yitian134/chromium,ropik/chromium,ropik/chromium,adobe/chromium,yitian134/chromium,adobe/chromium,ropik/chromium,yitian134/chromium,yitian134/chromium,adobe/chromium,adobe/chromium,adobe/chromium,ropik/chromium,yitian134/chromium,adobe/chromium,adobe/chromium,yitian134/chromium,adobe/chromium,ropik/chromium,adobe/chromium,ropik/chromium,yitian134/chromium,ropik/chromium