Retain the referrer policy when loading an about:blank iframe. (#34432)

This allows the referrer policy to be inherited correctly by the iframe.

Signed-off-by: Shane Handley <shanehandley@fastmail.com>

components/script/script_thread.rs

@@ -2985,7 +2985,7 @@ impl ScriptThread {
             load_data.inherited_secure_context,
         );
         if load_data.url.as_str() == "about:blank" {
-            self.start_page_load_about_blank(new_load, load_data.js_eval_result);
+            self.start_page_load_about_blank(new_load, load_data);
         } else if load_data.url.as_str() == "about:srcdoc" {
             self.page_load_about_srcdoc(new_load, load_data);
         } else {
@@ -4207,11 +4207,7 @@ impl ScriptThread {
 
     /// Synchronously fetch `about:blank`. Stores the `InProgressLoad`
     /// argument until a notification is received that the fetch is complete.
-    fn start_page_load_about_blank(
+    fn start_page_load_about_blank(&self, incomplete: InProgressLoad, load_data: LoadData) {
-        &self,
-        incomplete: InProgressLoad,
-        js_eval_result: Option<JsEvalResult>,
-    ) {
         let id = incomplete.pipeline_id;
 
         self.incomplete_loads.borrow_mut().push(incomplete);
@@ -4221,10 +4217,11 @@ impl ScriptThread {
 
         let mut meta = Metadata::default(url);
         meta.set_content_type(Some(&mime::TEXT_HTML));
+        meta.set_referrer_policy(load_data.referrer_policy);
 
         // If this page load is the result of a javascript scheme url, map
         // the evaluation result into a response.
-        let chunk = match js_eval_result {
+        let chunk = match load_data.js_eval_result {
             Some(JsEvalResult::Ok(content)) => content,
             Some(JsEvalResult::NoContent) => {
                 meta.status = http::StatusCode::NO_CONTENT.into();

tests/wpt/meta-legacy-layout/referrer-policy/generic/inheritance/iframe-inheritance-about-blank.html.ini

@@ -1,7 +1,3 @@
 [iframe-inheritance-about-blank.html]
   [The value of document.referrer in an about:blank iframe is the outer document's full URL, regardless of referrer policy]
     expected: FAIL
-
-  [The fetch() API in an about:blank iframe with a custom URL referrer is fetched with a 'Referer` header that uses the outer document's URL along with its referrer policy]
-    expected: FAIL
-

tests/wpt/meta-legacy-layout/referrer-policy/generic/inheritance/iframe-inheritance-javascript-child.html.ini

@@ -1,9 +1,3 @@
 [iframe-inheritance-javascript-child.html]
-  [Referrer Policy: iframes with javascript url reuse referrer policy 1]
-    expected: FAIL
-
   [Referrer Policy: iframes with javascript url reuse referrer policy 2]
     expected: FAIL
-
-  [Referrer Policy: iframes with javascript url reuse referrer policy]
-    expected: FAIL

tests/wpt/meta-legacy-layout/referrer-policy/generic/inheritance/iframe-inheritance-javascript.html.ini

@@ -1,3 +0,0 @@
-[iframe-inheritance-javascript.html]
-  [Referrer Policy: iframes with javascript url reuse referrer policy 1]
-    expected: FAIL

tests/wpt/meta-legacy-layout/referrer-policy/generic/inheritance/popup-inheritance-about-blank.html.ini

@@ -1,7 +1,3 @@
 [popup-inheritance-about-blank.html]
-  [The fetch() API in an about:blank popup with a custom URL referrer is fetched with a 'Referer` header that uses the outer document's URL along with its referrer policy]
-    expected: FAIL
-
   [The value of document.referrer in an about:blank popup is the outer document's full URL, regardless of referrer policy]
     expected: FAIL
-

tests/wpt/meta/referrer-policy/generic/inheritance/iframe-inheritance-about-blank.html.ini

@@ -1,7 +1,3 @@
 [iframe-inheritance-about-blank.html]
   [The value of document.referrer in an about:blank iframe is the outer document's full URL, regardless of referrer policy]
     expected: FAIL
-
-  [The fetch() API in an about:blank iframe with a custom URL referrer is fetched with a 'Referer` header that uses the outer document's URL along with its referrer policy]
-    expected: FAIL
-

tests/wpt/meta/referrer-policy/generic/inheritance/iframe-inheritance-javascript-child.html.ini

@@ -1,9 +1,3 @@
 [iframe-inheritance-javascript-child.html]
-  [Referrer Policy: iframes with javascript url reuse referrer policy 1]
-    expected: FAIL
-
   [Referrer Policy: iframes with javascript url reuse referrer policy 2]
     expected: FAIL
-
-  [Referrer Policy: iframes with javascript url reuse referrer policy]
-    expected: FAIL

tests/wpt/meta/referrer-policy/generic/inheritance/iframe-inheritance-javascript.html.ini

@@ -1,3 +0,0 @@
-[iframe-inheritance-javascript.html]
-  [Referrer Policy: iframes with javascript url reuse referrer policy 1]
-    expected: FAIL

tests/wpt/meta/referrer-policy/generic/inheritance/popup-inheritance-about-blank.html.ini

@@ -1,7 +1,3 @@
 [popup-inheritance-about-blank.html]
-  [The fetch() API in an about:blank popup with a custom URL referrer is fetched with a 'Referer` header that uses the outer document's URL along with its referrer policy]
-    expected: FAIL
-
   [The value of document.referrer in an about:blank popup is the outer document's full URL, regardless of referrer policy]
     expected: FAIL
-