AutoFill: Always check the result of FormField::Add().
AutoFill: Always check the result of FormField::Add().

CID=8477
BUG=none
TEST=none

Review URL: http://codereview.chromium.org/2811064

git-svn-id: http://src.chromium.org/svn/trunk/src@53356 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 148deda500ca445193ef69c7e2b4155a5e9699a7
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser