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 a92c75e1396de02f7a606d0c5422766dab070d18..298a21237303e9d50ca7eea571950a2c4cfd16c5 100644
--- a/third_party/WebKit/Source/core/timing/PerformanceResourceTiming.h
+++ b/third_party/WebKit/Source/core/timing/PerformanceResourceTiming.h
@@ -45,6 +45,8 @@ class ResourceTimingInfo;
 class CORE_EXPORT PerformanceResourceTiming : public PerformanceEntry {
   DEFINE_WRAPPERTYPEINFO();
 
+  friend class PerformanceResourceTimingTest;
+
  public:
   ~PerformanceResourceTiming() override;
   static PerformanceResourceTiming* create(const ResourceTimingInfo& info,
@@ -67,6 +69,7 @@ class CORE_EXPORT PerformanceResourceTiming : public PerformanceEntry {
   }
   // Related doc: https://goo.gl/uNecAj.
   virtual AtomicString initiatorType() const;
+  AtomicString nextHopProtocol() const;
   DOMHighResTimeStamp workerStart() const;
   virtual DOMHighResTimeStamp redirectStart() const;
   virtual DOMHighResTimeStamp redirectEnd() const;
@@ -101,6 +104,10 @@ class CORE_EXPORT PerformanceResourceTiming : public PerformanceEntry {
                             bool m_allowTimingDetails,
                             bool m_allowRedirectDetails);
 
+  static AtomicString getNextHopProtocol(
+      const AtomicString& alpnNegotiatedProtocol,
+      const AtomicString& connectionInfo);
+
   double workerReady() const;
 
   virtual ResourceLoadTiming* resourceLoadTiming() const;
@@ -109,8 +116,12 @@ class CORE_EXPORT PerformanceResourceTiming : public PerformanceEntry {
   virtual unsigned long long getTransferSize() const;
   virtual unsigned long long getEncodedBodySize() const;
   virtual unsigned long long getDecodedBodySize() const;
+  virtual AtomicString alpnNegotiatedProtocol() const;
+  virtual AtomicString connectionInfo() const;
 
   AtomicString m_initiatorType;
+  AtomicString m_alpnNegotiatedProtocol;
+  AtomicString m_connectionInfo;
   double m_timeOrigin;
   RefPtr<ResourceLoadTiming> m_timing;
   double m_lastRedirectEndTime;