chore: align `Headers` to spec (#10199)

This commit aligns `Headers` to spec. It also removes the now unused
03_dom_iterable.js file. We now pass all relevant `Headers` WPT. We do
not implement any sort of header filtering, as we are a server side
runtime.

This is likely not the most efficient implementation of `Headers` yet.
It is however spec compliant. Once all the APIs in the `HTTP` hot loop
are correct we can start optimizing them. It is likely that this commit
reduces bench throughput temporarily.

2 files changed, 12 insertions, 0 deletions

diff --git a/tools/wpt/expectation.json b/tools/wpt/expectation.json
index 98fc105d5..5291b95f2 100644
--- a/tools/wpt/expectation.json
+++ b/tools/wpt/expectation.json
@@ -684,6 +684,15 @@
           "Check isReloadNavigation attribute",
           "Check isHistoryNavigation attribute"
         ]
+      },
+      "headers": {
+        "headers-basic.any.js": true,
+        "headers-casing.any.js": true,
+        "headers-combine.any.js": true,
+        "headers-errors.any.js": true,
+        "headers-normalize.any.js": true,
+        "headers-record.any.js": true,
+        "headers-structure.any.js": true
       }
     },
     "data-urls": {
diff --git a/tools/wpt/runner.ts b/tools/wpt/runner.ts
index 28b2db0ee..4949c6269 100644
--- a/tools/wpt/runner.ts
+++ b/tools/wpt/runner.ts
@@ -25,6 +25,9 @@ export async function runWithTestUtil<T>(
     }
     const passedTime = performance.now() - start;
     if (passedTime > 15000) {
+      proc.kill(2);
+      await proc.status();
+      proc.close();
       throw new Error("Timed out while trying to start wpt test util.");
     }
   }