Omnibox: make omnibox sensitive to touch
Omnibox: make omnibox sensitive to touch

After using theme_fontPixelSizeNormal fontsize in Omnibox, it's hard to
touch into Omnibox. That's due to textinput selected fields shrink with
small fontsize.

Add a mouse area to handle tap into omnibox event.


Former-commit-id: ec4e5afaaf95eaf5f2eb348582cd5e814211139c
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