Implement nextHopProtocol in PerformanceResourceTiming and PerformanceNavigationTiming.

third_party/WebKit/Source/core/timing/PerformanceResourceTiming.cpp

Index: third_party/WebKit/Source/core/timing/PerformanceResourceTiming.cpp
diff --git a/third_party/WebKit/Source/core/timing/PerformanceResourceTiming.cpp b/third_party/WebKit/Source/core/timing/PerformanceResourceTiming.cpp
index 48678a8993855bdb47ea6837809bb3b98a80c850..eb3ca52a353be14f1091bbbb10c7283095317171 100644
--- a/third_party/WebKit/Source/core/timing/PerformanceResourceTiming.cpp
+++ b/third_party/WebKit/Source/core/timing/PerformanceResourceTiming.cpp
@@ -57,6 +57,8 @@ PerformanceResourceTiming::PerformanceResourceTiming(
                            info.LoadFinishTime(),
                            info.NegativeAllowed())),
       initiator_type_(info.InitiatorType()),
+      alpn_negotiated_protocol_(info.FinalResponse().AlpnNegotiatedProtocol()),
+      connection_info_(info.FinalResponse().ConnectionInfoString()),
       time_origin_(time_origin),
       timing_(info.FinalResponse().GetResourceLoadTiming()),
       last_redirect_end_time_(last_redirect_end_time),
@@ -106,6 +108,36 @@ AtomicString PerformanceResourceTiming::initiatorType() const {
   return initiator_type_;
 }
 
+AtomicString PerformanceResourceTiming::AlpnNegotiatedProtocol() const {
+  return alpn_negotiated_protocol_;
+}
+
+AtomicString PerformanceResourceTiming::ConnectionInfo() const {
+  return connection_info_;
+}
+
+AtomicString PerformanceResourceTiming::GetNextHopProtocol(
+    const AtomicString& alpn_negotiated_protocol,
+    const AtomicString& connection_info) {
+  // Fallback to connection_info when alpn_negotiated_protocol is unknown.
+  AtomicString returnedProtocol = alpn_negotiated_protocol == "unknown"
+                                      ? connection_info
+                                      : alpn_negotiated_protocol;
+  // Fallback to "http/1.1" when connection_info is also unknown.
+  returnedProtocol =
+      returnedProtocol == "unknown" ? "http/1.1" : returnedProtocol;
+
+  if (returnedProtocol.Contains("quic"))
+    returnedProtocol = "hq";
+
+  return returnedProtocol;
+}
+
+AtomicString PerformanceResourceTiming::nextHopProtocol() const {
+  return PerformanceResourceTiming::GetNextHopProtocol(AlpnNegotiatedProtocol(),
+                                                       ConnectionInfo());
+}
+
 DOMHighResTimeStamp PerformanceResourceTiming::workerStart() const {
   ResourceLoadTiming* timing = GetResourceLoadTiming();
   if (!timing || timing->WorkerStart() == 0.0)
@@ -277,6 +309,7 @@ unsigned long long PerformanceResourceTiming::decodedBodySize() const {
 void PerformanceResourceTiming::BuildJSONValue(V8ObjectBuilder& builder) const {
   PerformanceEntry::BuildJSONValue(builder);
   builder.AddString("initiatorType", initiatorType());
+  builder.AddString("nextHopProtocol", nextHopProtocol());
   builder.AddNumber("workerStart", workerStart());
   builder.AddNumber("redirectStart", redirectStart());
   builder.AddNumber("redirectEnd", redirectEnd());