Fixing Adyoulike adapter for Safari iOS7 (prebid#1296)

* Added a try/catch block around the troublesome code.

* Defaulted to false, to make the unit tests pass.

src/adapters/adyoulike.js

@@ -66,8 +66,17 @@ var AdyoulikeAdapter = function AdyoulikeAdapter() {
  Placements: placements,
  };
 
- if (performance && performance.navigation) {
- body.PageRefreshed = performance.navigation.type === performance.navigation.TYPE_RELOAD;
+ // performance isn't supported by mobile safari iOS7. window.performance works, but
+ // evaluates to true on a unit test which expects false.
+ //
+ // try/catch was added to un-block the Prebid 0.25 release, but the adyoulike adapter
+ // maintainers should revisit this and see if it's really what they want.
+ try {
+ if (performance && performance.navigation) {
+ body.PageRefreshed = performance.navigation.type === performance.navigation.TYPE_RELOAD;
+ }
+ } catch (e) {
+ body.PageRefreshed = false;
  }
 
  return JSON.stringify(body);