Measure time required before a layout query is serviced by the layout thread
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- [X] extract QueryMsg from ReflowGoal
- [X] introduce QueryMsg timestamp
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- [x] These changes fix#19795 (github issue number if applicable).
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replaced content_type from DOCString to Mime
Replaced content_type from DomString to Mime
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- [x] These changes fix#16483 (https://github.com/servo/servo/issues/16483).
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This allows servo to use the ExternalScrollId API from WebRender fixing
some issues related to duplicate scroll root ids.
Fixes#17176.
Fixes#19287.
Fixes#19648.
Use try syntax for Option where appropriate
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Made fire_mouse_event take an enum for event_name
Added an enum with the mouse event options for `fire_mouse_event` and refactored the `event_name` parameter to take the enum as argument.
I also added two options (Leave and Enter) which are noted as todo in the comments.
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- [X] These Changes fix#18943.
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Use WebRender to compute text index on click events
This is the second half of switching over to WebRender for hit testing.
Now that WebRender gives us the location of the hit tested point in the
display item, we can use that to calculate text index.
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