fix(ngTouch): remove ngClick override, $touchProvider, and $touch
Closes #15761
Closes #15755
BREAKING CHANGE:
The `ngClick` directive from the ngTouch module has been removed, and with it the
corresponding `$touchProvider` and `$touch` service.
If you have included ngTouch v1.5.0 or higher in your application, and have not
changed the value of `$touchProvider.ngClickOverrideEnabled()`, or injected and used the `$touch`
service, then there are no migration steps for your code. Otherwise you must remove references to
the provider and service.
The `ngClick` override directive had been deprecated and by default disabled since v1.5.0,
because of buggy behavior in edge cases, and a general trend to avoid special touch based
overrides of click events. In modern browsers, it should not be necessary to use a touch override
library:
- Chrome, Firefox, Edge, and Safari remove the 300ms delay when
`<meta name="viewport" content="width=device-width">` is set.
- Internet Explorer 10+, Edge, Safari, and Chrome remove the delay on elements that have the
`touch-action` css property is set to `manipulation`.
You can find out more in these articles:
https://developers.google.com/web/updates/2013/12/300ms-tap-delay-gone-away
https://developer.apple.com/library/content/releasenotes/General/WhatsNewInSafari/Articles/Safari_9_1.html#//apple_ref/doc/uid/TP40014305-CH10-SW8
https://blogs.msdn.microsoft.com/ie/2015/02/24/pointer-events-w3c-recommendation-interoperable-touch-and-removing-the-dreaded-300ms-tap-delay/
Martin Staffa
11d9ad1eb2