Implement nextHopProtocol in PerformanceResourceTiming and PerformanceNavigationTiming.

third_party/WebKit/Source/platform/loader/fetch/ResourceResponse.h

Index: third_party/WebKit/Source/platform/loader/fetch/ResourceResponse.h
diff --git a/third_party/WebKit/Source/platform/loader/fetch/ResourceResponse.h b/third_party/WebKit/Source/platform/loader/fetch/ResourceResponse.h
index 33bcae001a7d545f19e2332927361a759edfac36..d0243d0bf562dd03fc7e0a03f6e6525f123ad4e5 100644
--- a/third_party/WebKit/Source/platform/loader/fetch/ResourceResponse.h
+++ b/third_party/WebKit/Source/platform/loader/fetch/ResourceResponse.h
@@ -341,6 +341,22 @@ class PLATFORM_EXPORT ResourceResponse final {
   unsigned short RemotePort() const { return remote_port_; }
   void SetRemotePort(unsigned short value) { remote_port_ = value; }
 
+  const AtomicString& AlpnNegotiatedProtocol() const {
+    return alpn_negotiated_protocol_;
+  }
+  void SetAlpnNegotiatedProtocol(const AtomicString& value) {
+    alpn_negotiated_protocol_ = value;
+  }
+
+  net::HttpResponseInfo::ConnectionInfo ConnectionInfo() const {
+    return connection_info_;
+  }
+  void SetConnectionInfo(net::HttpResponseInfo::ConnectionInfo value) {
+    connection_info_ = value;
+  }
+
+  String ConnectionInfoString() const;
+
   long long EncodedDataLength() const { return encoded_data_length_; }
   void SetEncodedDataLength(long long value);
 
@@ -477,6 +493,12 @@ class PLATFORM_EXPORT ResourceResponse final {
   // Remote port number of the socket which fetched this resource.
   unsigned short remote_port_;
 
+  // ALPN negotiated protocol of the socket which fetched this resource.
+  AtomicString alpn_negotiated_protocol_;
+
+  // Information about the type of connection used to fetch this resource.
+  net::HttpResponseInfo::ConnectionInfo connection_info_;
+
   // Size of the response in bytes prior to decompression.
   long long encoded_data_length_;