RFR: 8232943: Gesture support is not initialized on iOS

[Kevin Rushforth]

On Fri, 25 Oct 2019 09:29:16 GMT, Jose Pereda <jpereda at openjdk.org> wrote:

> This PR only affects iOS native code.
> 
> JBS issue: https://bugs.openjdk.java.net/browse/JDK-8232943
> 
> Since the `IosGestureSupport` class is only instantiated from the native side, the proposal is to change in `ios/GlassViewDelegate.m` the use of `FindClass` in favor of `[GlassHelper ClassForName]`, in the same way as it is done in [`mac/GlassViewDelegate.m`](https://github.com/openjdk/jfx/blob/master/modules/javafx.graphics/src/main/native-glass/mac/GlassViewDelegate.m#L614) to instantiate `MacGestureSupport`.
> 
> ----------------
> 
> Commits:
>  - 49f39910: Use ClassForName instead of FindClass
> 
> Changes: https://git.openjdk.java.net/jfx/pull/23/files
>  Webrev: https://webrevs.openjdk.java.net/jfx/23/webrev.00
>   Issue: https://bugs.openjdk.java.net/browse/JDK-8232943
>   Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
>   Patch: https://git.openjdk.java.net/jfx/pull/23.diff
>   Fetch: git fetch https://git.openjdk.java.net/jfx pull/23/head:pull/23

@johanvos should be able to review this.

PR: https://git.openjdk.java.net/jfx/pull/23