Remove extra spacing around html content to maximize WebUI real estate.
Remove extra spacing around html content to maximize WebUI real estate.

BUG=None
TEST=Checked that a dialog (WebUI certificate viewer) no longer has large gray padding inside of it.


Review URL: http://codereview.chromium.org/7373002

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@93519 0039d316-1c4b-4281-b951-d872f2087c98

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