Auto merge of #24508 - pajamapants3000:21254, r=jdm

Add start_time to resource timing.

<!-- Please describe your changes on the following line: -->
`start_time` property added to `ResourceFetchTiming`, which enables the setting of `start_time` in the `PerformanceEntry` member of `PerformanceResourceTiming`.

Following the specification at https://w3c.github.io/resource-timing/#dfn-starttime, `start_time` is set to the value of `redirect_start` if redirection occurs and the timing allow check passes. Otherwise it has the same value as `fetch_start`.

---
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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 #21254

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- [x] There are tests for these changes OR
- [ ] These changes do not require tests because ___

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This commit is contained in:
bors-servo 2019-10-22 09:34:07 -04:00 committed by GitHub
commit bf587f22d7
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8 changed files with 277 additions and 15 deletions

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@ -22,8 +22,8 @@ use net_traits::filemanager_thread::RelativePos;
use net_traits::request::{CredentialsMode, Destination, Referrer, Request, RequestMode};
use net_traits::request::{Origin, ResponseTainting, Window};
use net_traits::response::{Response, ResponseBody, ResponseType};
use net_traits::ResourceAttribute;
use net_traits::{FetchTaskTarget, NetworkError, ReferrerPolicy, ResourceFetchTiming};
use net_traits::{ResourceAttribute, ResourceTimeValue};
use servo_arc::Arc as ServoArc;
use servo_url::ServoUrl;
use std::borrow::Cow;
@ -90,12 +90,19 @@ pub type DoneChannel = Option<(Sender<Data>, Receiver<Data>)>;
/// [Fetch](https://fetch.spec.whatwg.org#concept-fetch)
pub fn fetch(request: &mut Request, target: Target, context: &FetchContext) {
// Step 7 of https://w3c.github.io/resource-timing/#processing-model
// Steps 7,4 of https://w3c.github.io/resource-timing/#processing-model
// rev order okay since spec says they're equal - https://w3c.github.io/resource-timing/#dfn-starttime
context
.timing
.lock()
.unwrap()
.set_attribute(ResourceAttribute::FetchStart);
context
.timing
.lock()
.unwrap()
.set_attribute(ResourceAttribute::StartTime(ResourceTimeValue::FetchStart));
fetch_with_cors_cache(request, &mut CorsCache::new(), target, context);
}