The testing_e2e util does not belong in platform-browser and was never
intended to be a public API. Move it out of that whole tree.
BREAKING CHANGE:
The following API was never intended to be public and is removed:
```js
import {verifyNoBrowserErrors} from '@angular/platform-browser/testing_e2e';
```
Consider using Protractor's console plugin: https://github.com/angular/protractor-console-plugin
Have DomElementSchemaRegistry support namespaced elements,
so that it does not fail when directives are applied in SVG (or xlink).
Without this fix, directives or property bindings cannot be
used in SVG.
Related to #5547Closes#5653