Implement nextHopProtocol in PerformanceResourceTiming and PerformanceNavigationTiming.

third_party/WebKit/Source/platform/exported/WebURLResponse.cpp

Index: third_party/WebKit/Source/platform/exported/WebURLResponse.cpp
diff --git a/third_party/WebKit/Source/platform/exported/WebURLResponse.cpp b/third_party/WebKit/Source/platform/exported/WebURLResponse.cpp
index 37cb7efd45267e787428643bc033e131c43a66e5..e02537dcb61f3b0ed407d356a5404234caaec56d 100644
--- a/third_party/WebKit/Source/platform/exported/WebURLResponse.cpp
+++ b/third_party/WebKit/Source/platform/exported/WebURLResponse.cpp
@@ -460,6 +460,15 @@ void WebURLResponse::setExtraData(WebURLResponse::ExtraData* extraData) {
   m_resourceResponse->setExtraData(ExtraDataContainer::create(extraData));
 }
 
+WebString WebURLResponse::alpnNegotiatedProtocol() const {
+  return m_resourceResponse->alpnNegotiatedProtocol();
+}
+
+void WebURLResponse::setALPNNegotiatedProtocol(
+    const WebString& alpnNegotiatedProtocol) {
+  m_resourceResponse->setALPNNegotiatedProtocol(alpnNegotiatedProtocol);
+}
+
 void WebURLResponse::appendRedirectResponse(const WebURLResponse& response) {
   m_resourceResponse->appendRedirectResponse(response.toResourceResponse());
 }