Set the modifier key mapping before preload engines.
Set the modifier key mapping before preload engines.

As described in the comment, we should set the modifier key mapping
before we change the current keyboard layout.

BUG=chromium-os:11697
TEST=confirm the errors don't appear in ui.LATEST

Review URL: http://codereview.chromium.org/6453002

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@74252 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