Regression: Fix font size for search input

Due to some refactoring in Resources.php, the rule added to input.search
in 7c69bd8a in ui.less became less important and is no longer applied
which makes the search input font huge.

Change-Id: I4e8348ee7712780f6c710213ea2c6278bce06f1b
Merge "Regression: Fix font size for search input"