AutoFill: Use PrefService::FindPreference instead of PrefService::HasPrefPath. HasPrefPath will crash if the preference is not registered.
AutoFill: Use PrefService::FindPreference instead of PrefService::HasPrefPath.
HasPrefPath will crash if the preference is not registered.

BUG=42358
TEST=none

Review URL: http://codereview.chromium.org/2007002

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@46519 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser