ui/gfx: Simplify RectToSkRect() implementation by using iset() function.
ui/gfx: Simplify RectToSkRect() implementation by using iset() function.

BUG=100898
R=pkasting@chromium.org
TBR=sky@chromium.org

Review URL: https://chromiumcodereview.appspot.com/9500001

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@124076 0039d316-1c4b-4281-b951-d872f2087c98

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