f9d483e76e
Now Angular doesn't support add event listeners as passive very easily.
User needs to use `elem.addEventListener('scroll', listener, {passive: true});`
or implements their own EventManagerPlugin to do that.
Angular may finally support new template syntax to support passive event, for now,
this commit introduces a temp solution to allow user to define the passive event names
in zone.js configurations.
User can define a global varibale like this.
```
(window as any)['__zone_symbol__PASSIVE_EVENTS'] = ['scroll'];
```
to let all `scroll` event listeners passive.
PR Close #34503
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| browser | ||
| closure | ||
| common | ||
| extra | ||
| jasmine | ||
| jest | ||
| mix | ||
| mocha | ||
| node | ||
| rxjs | ||
| testing | ||
| zone-spec | ||
| BUILD.bazel | ||
| zone.ts | ||