Add SW static routing API timing information to resource timing

Author: quasi-mod

index.html

@@ -370,6 +370,12 @@ <h3>
               readonly attribute DOMHighResTimeStamp firstInterimResponseStart;
               readonly attribute DOMHighResTimeStamp responseStart;
               readonly attribute DOMHighResTimeStamp responseEnd;
+              readonly attribute DOMHighResTimeStamp workerRouterEvaluationStart;
+              readonly attribute DOMHighResTimeStamp workerCacheLookupStart;
+              // Holds a value from RouterSourceEnum or empty string
+              readonly attribute DOMString workerMatchedRouterSource;
+              // Holds a value from RouterSourceEnum (excluding "race-network-and-fetch-handler") or empty string
+              readonly attribute DOMString workerFinalRouterSource;
               readonly attribute unsigned long long  transferSize;
               readonly attribute unsigned long long  encodedBodySize;
               readonly attribute unsigned long long  decodedBodySize;
@@ -420,6 +426,11 @@ <h3>
           {{RenderBlockingStatusType}} <a data-dfn-for=
           "PerformanceResourceTiming"><dfn>render-blocking status</dfn></a>.
         </p>
+        <p>
+          A <a>PerformanceResourceTiming</a> has an associated
+          [=service worker timing info=] <a data-dfn-for=
+          "ServiceWorkerTiming"><dfn>service worker timing</dfn></a>.
+        </p>
         <p data-dfn-for="PerformanceResourceTiming">
           When <dfn>toJSON</dfn> is called, run the [=default toJSON steps=]
           for {{PerformanceResourceTiming}}.
@@ -722,6 +733,26 @@ <h3>
           info</a>'s [=fetch timing info/render-blocking=] is true; otherwise
           <a data-link-for="RenderBlockingStatusType">non-blocking</a>.
         </p>
+        <p data-dfn-for="PerformanceResourceTiming">
+          The <dfn>workerRouterEvaluationStart</dfn> getter steps are to return
+          <a>this</a>'s <a data-for="PerformanceResourceTiming">service worker
+            timing info</a>'s [=service worker timing info/worker router evaluation start=].
+        </p>
+        <p data-dfn-for="PerformanceResourceTiming">
+          The <dfn>workerCacheLookupStart</dfn> getter steps are to return
+          <a>this</a>'s <a data-for="PerformanceResourceTiming">service worker
+            timing info</a>'s [=service worker timing info/worker cache lookup start=].
+        </p>
+        <p data-dfn-for="PerformanceResourceTiming">
+          The <dfn>workerMatchedRouterSource</dfn> getter steps are to return
+          <a>this</a>'s <a data-for="PerformanceResourceTiming">service worker
+            timing info</a>'s [=service worker timing info/worker matched router source=].
+        </p>
+        <p data-dfn-for="PerformanceResourceTiming">
+          The <dfn>workerFinalRouterSource</dfn> getter steps are to return
+          <a>this</a>'s <a data-for="PerformanceResourceTiming">service worker
+            timing info</a>'s [=service worker timing info/worker final router source=].
+        </p>
         <p class='note'>
           A user agent implementing <a>PerformanceResourceTiming</a> would need
           to include <code>"resource"</code> in