Auto merge of #24123 - gterzian:redo_blob, r=jdm

Restructure Blob, structured serialization

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FIX #24052 and also address the "cloning" half of FIX #23917

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- [ ] `./mach test-tidy` does not report any errors
- [ ] These changes fix #___ (GitHub issue number if applicable)

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1 files changed, 4 insertions, 3 deletions

diff --git a/components/script/dom/xmlhttprequest.rs b/components/script/dom/xmlhttprequest.rs
index 1953aeddb60..ce90aed8f44 100644
--- a/components/script/dom/xmlhttprequest.rs
+++ b/components/script/dom/xmlhttprequest.rs
@@ -18,7 +18,7 @@ use crate::dom::bindings::refcounted::Trusted;
 use crate::dom::bindings::reflector::{reflect_dom_object, DomObject};
 use crate::dom::bindings::root::{Dom, DomRoot, MutNullableDom};
 use crate::dom::bindings::str::{is_token, ByteString, DOMString, USVString};
-use crate::dom::blob::{Blob, BlobImpl};
+use crate::dom::blob::{normalize_type_string, Blob};
 use crate::dom::document::DocumentSource;
 use crate::dom::document::{Document, HasBrowsingContext, IsHTMLDocument};
 use crate::dom::event::{Event, EventBubbles, EventCancelable};
@@ -65,6 +65,7 @@ use net_traits::CoreResourceMsg::Fetch;
 use net_traits::{FetchChannels, FetchMetadata, FilteredMetadata};
 use net_traits::{FetchResponseListener, NetworkError, ReferrerPolicy};
 use net_traits::{ResourceFetchTiming, ResourceTimingType};
+use script_traits::serializable::BlobImpl;
 use script_traits::DocumentActivity;
 use servo_atoms::Atom;
 use servo_url::ServoUrl;
@@ -1260,12 +1261,12 @@ impl XMLHttpRequest {
         let mime = self
             .final_mime_type()
             .as_ref()
-            .map(|m| m.to_string())
+            .map(|m| normalize_type_string(&m.to_string()))
             .unwrap_or("".to_owned());
 
         // Step 3, 4
         let bytes = self.response.borrow().to_vec();
-        let blob = Blob::new(&self.global(), BlobImpl::new_from_bytes(bytes), mime);
+        let blob = Blob::new(&self.global(), BlobImpl::new_from_bytes(bytes, mime));
         self.response_blob.set(Some(&blob));
         blob
     }