Auto merge of #13130 - samuknet:dblclick, r=nox

'dblclick' event

<!-- Please describe your changes on the following line: -->
* Add field to document struct to store information about last 'click' event
* Add code to `handle_mouse_event` function to detect and fire double click events

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: -->
- [ X] `./mach build -d` does not report any errors
- [X ] `./mach test-tidy` does not report any errors
- [X ] These changes fix #12767  (github issue number if applicable).

<!-- Either: -->
- [ ] There are tests for these changes OR
- [X ] These changes do not require tests because it is input related

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components/script/dom/bindings/trace.rs

@@ -87,7 +87,7 @@ use std::rc::Rc;
 use std::sync::Arc;
 use std::sync::atomic::{AtomicBool, AtomicUsize};
 use std::sync::mpsc::{Receiver, Sender};
-use std::time::SystemTime;
+use std::time::{SystemTime, Instant};
 use string_cache::{Atom, Namespace, QualName};
 use style::attr::{AttrIdentifier, AttrValue, LengthOrPercentageOrAuto};
 use style::domrefcell::DOMRefCell;
@@ -346,6 +346,7 @@ no_jsmanaged_fields!(ResponseBody);
 no_jsmanaged_fields!(ResourceThreads);
 no_jsmanaged_fields!(StatusCode);
 no_jsmanaged_fields!(SystemTime);
+no_jsmanaged_fields!(Instant);
 no_jsmanaged_fields!(RelativePos);
 no_jsmanaged_fields!(OpaqueStyleAndLayoutData);
 no_jsmanaged_fields!(PathBuf);