refactor($browser): correctly export helper used in specs
refactor($browser): correctly export helper used in specs

The helper is used in `fakeWindow.location.hash`. ATM, no test is using
the `hash` getter, so there were no errors.

ze-pequeno/angular.js,ze-pequeno/angular.js,gkalpak/angular.js,mosoft521/angular.js,mosoft521/angular.js,Narretz/angular.js,mgol/angular.js,jbedard/angular.js,ze-pequeno/angular.js,eistrati/angular.js,mosoft521/angular.js,reneploetz/angular.js,Narretz/angular.js,mgol/angular.js,mosoft521/angular.js,jbedard/angular.js,eistrati/angular.js,reneploetz/angular.js,angular/angular.js,eistrati/angular.js,reneploetz/angular.js,angular/angular.js,gkalpak/angular.js,jbedard/angular.js,mgol/angular.js,angular/angular.js,eistrati/angular.js,ze-pequeno/angular.js,Narretz/angular.js,jbedard/angular.js,reneploetz/angular.js,gkalpak/angular.js,gkalpak/angular.js,Narretz/angular.js,angular/angular.js,mgol/angular.js