Send touch events to root pipeline, and allow forwarding to iframes.
Instead of letting the compositor try to find the correct scroll
layer for a touch event, switch touch events to work the same way
that mouse events do.
Touch events are now dispatched to the root pipeline, and then
forwarded to child iframes as required.
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Support SVG element
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minimal SVG element implementation
---
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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix#12974 (github issue number if applicable).
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Add 'image-rendering' support and some cleanup
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- [x] `./mach build-geckolib` does not report any errors
- [x] `./mach test-tidy` does not report any errors
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- [x] These changes have been tested manually

r? @Manishearth
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Instead of letting the compositor try to find the correct scroll
layer for a touch event, switch touch events to work the same way
that mouse events do.
Touch events are now dispatched to the root pipeline, and then
forwarded to child iframes as required.
IFrame elements now manage FrameIds rather than the constellation.
<!-- Please describe your changes on the following line: -->
This PR stores the FrameId as well as the PipelineId in an html iframe. The iframes are now responsible for creating frame ids, not the constellation.
This is the first step in fixing #633, because it means we know the frame id of each script thread when it is created. It also means we can share the frame id, for example using it in the debugger.
cc @jdm, @ConnorGBrewster and @ejpbruel.
---
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- [X] `./mach test-tidy` does not report any errors
- [X] These changes do not require tests because it's a refactoring.
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Blind attempt to fix#13626
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The error message was:
```
error: unknown character escape: d
--> C:\projects\servo\target\debug\build\style-9b556a6c7bb4f044\out/properties.rs:44:55
|
44 | #[path="C:/projects/servo/components/style/properties\declaration_block.rs"]
|
```
Use `repr()` to get a Python string literal (whose character escaping is compatible enough with Rust’s) and `[1:-1]` to remove the single quotes.
---
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- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix#13626 (github issue number if applicable).
<!-- Either: -->
- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because _____
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The error message was:
```
error: unknown character escape: d
--> C:\projects\servo\target\debug\build\style-9b556a6c7bb4f044\out/properties.rs:44:55
|
44 | #[path="C:/projects/servo/components/style/properties\declaration_block.rs"]
|
```
Use `repr()` to get a Python string literal (whose character escaping
is compatible enough with Rust’s) and `[1:-1]` to remove the single quotes.
Script-generated tests for Servo_* gecko bindings
All changes done in https://github.com/servo/servo/pull/13603, but this time I understand why I should have created a branch instead of doing everything on master.
---
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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix#13598 (github issue number if applicable).
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- [ ] There are tests for these changes OR
- [x] These changes do not require tests because `they are tests`.
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