LibWeb: Implement Resource Timing

Author: https://github.com/Lubrsi
Commit: 6d1f78198d
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3704
Reviewed-by: https://github.com/ADKaster ✅

Libraries/LibWeb/Fetch/Fetching/Fetching.cpp

@@ -53,6 +53,7 @@
 #include <LibWeb/MixedContent/AbstractOperations.h>
 #include <LibWeb/Platform/EventLoopPlugin.h>
 #include <LibWeb/ReferrerPolicy/AbstractOperations.h>
+#include <LibWeb/ResourceTiming/PerformanceResourceTiming.h>
 #include <LibWeb/SRI/SRI.h>
 #include <LibWeb/SecureContexts/AbstractOperations.h>
 #include <LibWeb/Streams/TransformStream.h>
@@ -687,13 +688,11 @@ void fetch_response_handover(JS::Realm& realm, Infrastructure::FetchParams const
                     body_info.content_type = MimeSniff::minimise_a_supported_mime_type(mime_type.value());
             }
 
-            // FIXME: 8. If fetchParams’s request’s initiator type is not null, then mark resource timing given timingInfo,
-            //           request’s URL, request’s initiator type, global, cacheState, bodyInfo, and responseStatus.
-            (void)timing_info;
-            (void)global;
-            (void)cache_state;
-            (void)body_info;
-            (void)response_status;
+            // 8. If fetchParams’s request’s initiator type is not null, then mark resource timing given timingInfo,
+            //    request’s URL, request’s initiator type, global, cacheState, bodyInfo, and responseStatus.
+            if (fetch_params.request()->initiator_type().has_value()) {
+                ResourceTiming::PerformanceResourceTiming::mark_resource_timing(timing_info, fetch_params.request()->url().to_string(), Infrastructure::initiator_type_to_string(fetch_params.request()->initiator_type().value()), global, cache_state, body_info, response_status);
+            }
         });
 
         // 4. Let processResponseEndOfBodyTask be the following steps:

Libraries/LibWeb/Fetch/Infrastructure/HTTP/Requests.cpp

@@ -442,6 +442,55 @@ StringView request_mode_to_string(Request::Mode mode)
     VERIFY_NOT_REACHED();
 }
 
+FlyString initiator_type_to_string(Request::InitiatorType initiator_type)
+{
+    switch (initiator_type) {
+    case Request::InitiatorType::Audio:
+        return "audio"_fly_string;
+    case Request::InitiatorType::Beacon:
+        return "beacon"_fly_string;
+    case Request::InitiatorType::Body:
+        return "body"_fly_string;
+    case Request::InitiatorType::CSS:
+        return "css"_fly_string;
+    case Request::InitiatorType::EarlyHint:
+        return "early-hints"_fly_string;
+    case Request::InitiatorType::Embed:
+        return "embed"_fly_string;
+    case Request::InitiatorType::Fetch:
+        return "fetch"_fly_string;
+    case Request::InitiatorType::Font:
+        return "font"_fly_string;
+    case Request::InitiatorType::Frame:
+        return "frame"_fly_string;
+    case Request::InitiatorType::IFrame:
+        return "iframe"_fly_string;
+    case Request::InitiatorType::Image:
+        return "image"_fly_string;
+    case Request::InitiatorType::IMG:
+        return "img"_fly_string;
+    case Request::InitiatorType::Input:
+        return "input"_fly_string;
+    case Request::InitiatorType::Link:
+        return "link"_fly_string;
+    case Request::InitiatorType::Object:
+        return "object"_fly_string;
+    case Request::InitiatorType::Ping:
+        return "ping"_fly_string;
+    case Request::InitiatorType::Script:
+        return "script"_fly_string;
+    case Request::InitiatorType::Track:
+        return "track"_fly_string;
+    case Request::InitiatorType::Video:
+        return "video"_fly_string;
+    case Request::InitiatorType::XMLHttpRequest:
+        return "xmlhttprequest"_fly_string;
+    case Request::InitiatorType::Other:
+        return "other"_fly_string;
+    }
+    VERIFY_NOT_REACHED();
+}
+
 Optional<Request::Priority> request_priority_from_string(StringView string)
 {
     if (string.equals_ignoring_ascii_case("high"sv))

Libraries/LibWeb/Fetch/Infrastructure/HTTP/Requests.h

@@ -531,6 +531,7 @@ private:
 
 StringView request_destination_to_string(Request::Destination);
 StringView request_mode_to_string(Request::Mode);
+FlyString initiator_type_to_string(Request::InitiatorType);
 
 Optional<Request::Priority> request_priority_from_string(StringView);