Implement nextHopProtocol in PerformanceResourceTiming and PerformanceNavigationTiming.

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

Index: third_party/WebKit/Source/core/timing/PerformanceResourceTiming.h
diff --git a/third_party/WebKit/Source/core/timing/PerformanceResourceTiming.h b/third_party/WebKit/Source/core/timing/PerformanceResourceTiming.h
index 7723329ec3732903820b88eeb3c31efede15dea3..548a4c81d671a97d6973b5c47e6fcfc6b55c7266 100644
--- a/third_party/WebKit/Source/core/timing/PerformanceResourceTiming.h
+++ b/third_party/WebKit/Source/core/timing/PerformanceResourceTiming.h
@@ -32,6 +32,7 @@
 #ifndef PerformanceResourceTiming_h
 #define PerformanceResourceTiming_h
 
+#include "core/CoreExport.h"
 #include "core/timing/PerformanceEntry.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
@@ -41,9 +42,11 @@ namespace blink {
 class ResourceLoadTiming;
 class ResourceTimingInfo;
 
-class PerformanceResourceTiming final : public PerformanceEntry {
+class CORE_EXPORT PerformanceResourceTiming final : public PerformanceEntry {
   DEFINE_WRAPPERTYPEINFO();
 
+  friend class PerformanceResourceTimingTest;
+
  public:
   static PerformanceResourceTiming* create(const ResourceTimingInfo& info,
                                            double timeOrigin,
@@ -65,7 +68,7 @@ class PerformanceResourceTiming final : public PerformanceEntry {
   }
 
   AtomicString initiatorType() const;
-
+  AtomicString nextHopProtocol() const;
   double workerStart() const;
   double redirectStart() const;
   double redirectEnd() const;
@@ -94,9 +97,15 @@ class PerformanceResourceTiming final : public PerformanceEntry {
                             bool m_allowRedirectDetails);
   ~PerformanceResourceTiming() override;
 
+  static AtomicString produceNextHopProtocol(
+      const AtomicString& alpnNegotiatedProtocol,
+      const AtomicString& connectionInfo);
+
   double workerReady() const;
 
   AtomicString m_initiatorType;
+  AtomicString m_nextHopProtocol;
+  AtomicString m_connectionInfo;
   double m_timeOrigin;
   RefPtr<ResourceLoadTiming> m_timing;
   double m_lastRedirectEndTime;