AutoFill optimization for form label finding.
AutoFill optimization for form label finding.

This replaces calls to |innnerText()| with calls to |nodeValue()| for performance
gains.

BUG=40306
TEST=FormManagerTest.Label


Review URL: http://codereview.chromium.org/1622013

git-svn-id: http://src.chromium.org/svn/trunk/src@44034 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 3d26b2f595e251c3c6f425be4d4470a3509994e9
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