Cache ICU collator keys for autofill country code lookup.
Cache ICU collator keys for autofill country code lookup.

Fixes a browser hang on form submission.

BUG=74911
TEST=manual: submit a form with autofill enabled and several profiles stored, don't observe a hang.

Review URL: http://codereview.chromium.org/6677009

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@77780 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