Fix fetching about:blank
When fetching about:blank, response body should be the empty byte
sequence.
Spec: https://fetch.spec.whatwg.org/#concept-basic-fetch
Before this change, response body would be set to `ResponseBody::Empty`,
and then fetching would result in an infinite loop at step 19 in fn
`main_fetch` (methods.rs).
r? @KiChjang
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Allow Firefox to be able to connect to devtools again
This doesn't fix the performance tab, but at least lets Firefox initialise the devtools window.
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When fetching about:blank, response body should be the empty byte
sequence.
Spec: https://fetch.spec.whatwg.org/#concept-basic-fetch
Before this change, response body would be set to `ResponseBody::Empty`,
and then fetching would result in an infinite loop at step 19 in fn
`main_fetch` (methods.rs).
These should represent JavaScript contexts, but not defining them at all
prevent any remote debugging session to be started from Firefox. They shouldn't
be conflated with tab actors.
Canvas cleanup
This PR cleans up the layerization infrastructure for canvas, which was unused, and removes unused dependencies.
It also takes in account my recent username change to update angle's dependency (offscreen_gl_context requires extra work due to webrender depending on it).
r? @jdm
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Support navigation keys
Rather useful.
If most people have these keys on their keyboard, I'd prefer to remove the backspace navigation handler. I've never used it on purpose, but it gets hit often by accident when an input widget isn't focused (either due to a misclick or debug build lag).
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Implementation of Blob Constructor with test changes
Apologize for the late PR. I see that #9977 already overlaps with some of the work. If that is accepted, then I'll change my PR to reflect just the WPT changes.
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over the data as well.
WebRender doesn't need the data, as it acquires it separately.
About a 50%-100% improvement in display list building time on
browser.html.
Read `rustc-with-gold` setting from env var when no `.servobuild`
The build system needs to disable gold on arm64 slaves. Other configuration is
done through environment variables, and buildbot hosts currently don't use a
.servobuild file at all.
This change adds the `get_env_bool` function to cast an environment variable's
string contents into a Python boolean, and uses it to retrieve the optional
`SERVO_RUSTC_WITH_GOLD` setting.
I figured it's worth throwing the helper function in now in case we later want to read booleans from other env vars, but there's currently no need to make up a name for and read from an env var for every single setting.
r? @larsbergstrom
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The build system needs to disable gold on arm64 slaves. Other configuration is
done through environment variables, and buildbot hosts currently don't use a
.servobuild file at all.
This change adds the `get_env_bool` function to cast an environment variable's
string contents into a Python boolean, and uses it to retrieve the optional
SERVO_RUSTC_WITH_GOLD setting.
array, and consolidate the multitude of display list messages into one.
Improves display list building performance by 50%-100% for small display
lists.
Don't re-add stylesheets to recompute vw/vh lengths
This is a follow-up to #9876. It avoids clearing and rebuilding SelectorMaps
when vh and vw units need to be recomputed. Instead it just dirties all nodes,
to force elements to be re-cascaded.
Filed #10104 for later follow-up work to dirty only affected nodes.
r? @SimonSapin
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