Allow overriding the waitForDidUpdateViewState timeout

[Tim Horton]

Allow overriding the waitForDidUpdateViewState timeout

[Tim Horton]

Created attachment 253474 [details]
Patch

[Darin Adler]

Comment on attachment 253474 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=253474&action=review

> Source/WebKit2/UIProcess/mac/RemoteLayerTreeDrawingAreaProxy.mm:407
> +    static std::chrono::milliseconds viewStateUpdateTimeout;
> +    if (viewStateUpdateTimeout == std::chrono::milliseconds::zero()) {
> +        if (id value = [[NSUserDefaults standardUserDefaults] objectForKey:@"WebKit2OverrideViewStateUpdateTimeoutMS"])
> +            viewStateUpdateTimeout = std::chrono::milliseconds([value integerValue]);
> +        else {
>  #if PLATFORM(IOS)
> -    auto viewStateUpdateTimeout = std::chrono::milliseconds(500);
> +            viewStateUpdateTimeout = std::chrono::milliseconds(500);
>  #else
> -    auto viewStateUpdateTimeout = std::chrono::milliseconds(250);
> +            viewStateUpdateTimeout = std::chrono::milliseconds(250);
>  #endif
> +        }
> +    }

We should not use zero as a magic value to mean uninitialized. We should use use a lambda and initialization syntax:

    static std::chrono::milliseconds viewStateUpdateTimeout = [] {
        ... fancy code in here ...
    }();