Report nav timing 2 instance as soon as it's requested.

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

Index: third_party/WebKit/Source/core/timing/PerformanceNavigationTiming.cpp
diff --git a/third_party/WebKit/Source/core/timing/PerformanceNavigationTiming.cpp b/third_party/WebKit/Source/core/timing/PerformanceNavigationTiming.cpp
index d5db734f01ae28a75529e172a19b13955f5eee48..db86b63b688fb65cb3316f88c5cf576a27741ef8 100644
--- a/third_party/WebKit/Source/core/timing/PerformanceNavigationTiming.cpp
+++ b/third_party/WebKit/Source/core/timing/PerformanceNavigationTiming.cpp
@@ -5,161 +5,329 @@
 #include "core/timing/PerformanceNavigationTiming.h"
 
 #include "bindings/core/v8/V8ObjectBuilder.h"
+#include "core/dom/Document.h"
+#include "core/dom/DocumentTiming.h"
+#include "core/frame/LocalFrame.h"
+#include "core/loader/DocumentLoadTiming.h"
+#include "core/loader/DocumentLoader.h"
 #include "core/timing/PerformanceBase.h"
+#include "platform/network/ResourceTimingInfo.h"
 
 namespace blink {
 
 PerformanceNavigationTiming::PerformanceNavigationTiming(
-    double timeOrigin,
-    double unloadEventStart,
-    double unloadEventEnd,
-    double loadEventStart,
-    double loadEventEnd,
-    unsigned short redirectCount,
-    double domInteractive,
-    double domContentLoadedEventStart,
-    double domContentLoadedEventEnd,
-    double domComplete,
-    NavigationType type,
-    double redirectStart,
-    double redirectEnd,
-    double fetchStart,
-    double responseEnd,
-    bool allowRedirectDetails,
-    bool hasSameOriginAsPreviousDocument,
-    ResourceLoadTiming* timing,
-    double lastRedirectEndTime,
-    double finishTime,
-    unsigned long long transferSize,
-    unsigned long long encodedBodyLength,
-    unsigned long long decodedBodyLength,
-    bool didReuseConnection)
-    : PerformanceResourceTiming("navigation",
-                                timeOrigin,
-                                timing,
-                                lastRedirectEndTime,
-                                finishTime,
-                                transferSize,
-                                encodedBodyLength,
-                                decodedBodyLength,
-                                didReuseConnection,
-                                true /*allowTimingDetails*/,  // TODO(sunjian):
-                                                              // Create an enum
-                                                              // for this.
-                                allowRedirectDetails,
-                                "document",
-                                "navigation",
-                                timeOrigin),
+    LocalFrame* frame,
+    std::unique_ptr<ResourceTimingInfo> info,
+    double timeOrigin)
+    : PerformanceResourceTiming("document", "navigation", 0.0, 0.0),
       m_timeOrigin(timeOrigin),
-      m_unloadEventStart(unloadEventStart),
-      m_unloadEventEnd(unloadEventEnd),
-      m_loadEventStart(loadEventStart),
-      m_loadEventEnd(loadEventEnd),
-      m_redirectCount(redirectCount),
-      m_domInteractive(domInteractive),
-      m_domContentLoadedEventStart(domContentLoadedEventStart),
-      m_domContentLoadedEventEnd(domContentLoadedEventEnd),
-      m_domComplete(domComplete),
-      m_type(type),
-      m_redirectStart(redirectStart),
-      m_redirectEnd(redirectEnd),
-      m_fetchStart(fetchStart),
-      m_responseEnd(responseEnd),
-      m_allowRedirectDetails(allowRedirectDetails),
-      m_hasSameOriginAsPreviousDocument(hasSameOriginAsPreviousDocument) {}
+      m_resourceTimingInfo(std::move(info)),
+      m_frame(frame) {}
 
 PerformanceNavigationTiming::~PerformanceNavigationTiming() {}
 
+DEFINE_TRACE(PerformanceNavigationTiming) {
+  visitor->trace(m_frame);
+  PerformanceEntry::trace(visitor);
+}
+
+DocumentLoadTiming* PerformanceNavigationTiming::documentLoadTiming() const {
+  DocumentLoader* loader = documentLoader();
+  if (!loader)
+    return nullptr;
+
+  return &loader->timing();
+}
+
+DocumentLoader* PerformanceNavigationTiming::documentLoader() const {
+  if (!m_frame)
+    return nullptr;
+
+  return m_frame->loader().documentLoader();
+}
+
+const DocumentTiming* PerformanceNavigationTiming::documentTiming() const {
+  if (!m_frame)
+    return nullptr;
+
+  Document* document = m_frame->document();
+  if (!document)
+    return nullptr;
+
+  return &document->timing();
+}
+
+ResourceLoadTiming* PerformanceNavigationTiming::resourceLoadTiming() const {
+  if (!m_resourceTimingInfo)
+    return nullptr;
+  return m_resourceTimingInfo->finalResponse().resourceLoadTiming();
+}
+
+ExecutionContext* PerformanceNavigationTiming::getExecutionContext() const {
+  return m_frame ? m_frame->document() : nullptr;
+}
+
+bool PerformanceNavigationTiming::getAllowRedirectDetails() const {
+  ExecutionContext* context = getExecutionContext();
+  SecurityOrigin* securityOrigin = PerformanceBase::getSecurityOrigin(context);
+  if (!securityOrigin)
+    return false;
+  if (!m_resourceTimingInfo)
+    return false;
+
+  return PerformanceBase::allowsTimingRedirect(
+      m_resourceTimingInfo->redirectChain(),
+      m_resourceTimingInfo->finalResponse(), *securityOrigin, context);
+}
+
 DOMHighResTimeStamp PerformanceNavigationTiming::unloadEventStart() const {
-  if (!m_allowRedirectDetails || !m_hasSameOriginAsPreviousDocument)
+  bool allowRedirectDetails = getAllowRedirectDetails();
+  DocumentLoadTiming* timing = documentLoadTiming();
+
+  if (!allowRedirectDetails || !timing ||
+      !timing->hasSameOriginAsPreviousDocument())
     return 0;
   return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(
-      m_timeOrigin, m_unloadEventStart);
+      m_timeOrigin, timing->unloadEventStart());
 }
 
 DOMHighResTimeStamp PerformanceNavigationTiming::unloadEventEnd() const {
-  if (!m_allowRedirectDetails || !m_hasSameOriginAsPreviousDocument)
-    return 0;
+  bool allowRedirectDetails = getAllowRedirectDetails();
+  DocumentLoadTiming* timing = documentLoadTiming();
 
-  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(m_timeOrigin,
-                                                             m_unloadEventEnd);
+  if (!allowRedirectDetails || !timing ||
+      !timing->hasSameOriginAsPreviousDocument())
+    return 0;
+  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(
+      m_timeOrigin, timing->unloadEventEnd());
 }
 
 DOMHighResTimeStamp PerformanceNavigationTiming::domInteractive() const {
-  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(m_timeOrigin,
-                                                             m_domInteractive);
+  const DocumentTiming* timing = documentTiming();
+  if (!timing)
+    return 0.0;
+  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(
+      m_timeOrigin, timing->domInteractive());
 }
 
 DOMHighResTimeStamp PerformanceNavigationTiming::domContentLoadedEventStart()
     const {
+  const DocumentTiming* timing = documentTiming();
+  if (!timing)
+    return 0.0;
   return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(
-      m_timeOrigin, m_domContentLoadedEventStart);
+      m_timeOrigin, timing->domContentLoadedEventStart());
 }
 
 DOMHighResTimeStamp PerformanceNavigationTiming::domContentLoadedEventEnd()
     const {
+  const DocumentTiming* timing = documentTiming();
+  if (!timing)
+    return 0.0;
   return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(
-      m_timeOrigin, m_domContentLoadedEventEnd);
+      m_timeOrigin, timing->domContentLoadedEventEnd());
 }
 
 DOMHighResTimeStamp PerformanceNavigationTiming::domComplete() const {
-  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(m_timeOrigin,
-                                                             m_domComplete);
+  const DocumentTiming* timing = documentTiming();
+  if (!timing)
+    return 0.0;
+  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(
+      m_timeOrigin, timing->domComplete());
 }
 
 DOMHighResTimeStamp PerformanceNavigationTiming::loadEventStart() const {
-  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(m_timeOrigin,
-                                                             m_loadEventStart);
+  DocumentLoadTiming* timing = documentLoadTiming();
+  if (!timing)
+    return 0.0;
+  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(
+      m_timeOrigin, timing->loadEventStart());
 }
 
 DOMHighResTimeStamp PerformanceNavigationTiming::loadEventEnd() const {
-  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(m_timeOrigin,
-                                                             m_loadEventEnd);
+  DocumentLoadTiming* timing = documentLoadTiming();
+  if (!timing)
+    return 0.0;
+  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(
+      m_timeOrigin, timing->loadEventEnd());
 }
 
-AtomicString PerformanceNavigationTiming::type() const {
-  switch (m_type) {
-    case NavigationType::Reload:
+AtomicString PerformanceNavigationTiming::getNavigationType(
+    NavigationType type,
+    const Document* document) {
+  if (document &&
+      document->pageVisibilityState() == PageVisibilityStatePrerender) {
+    return "prerender";
+  }
+  switch (type) {
+    case NavigationTypeReload:
       return "reload";
-    case NavigationType::BackForward:
+    case NavigationTypeBackForward:
       return "back_forward";
-    case NavigationType::Prerender:
-      return "prerender";
-    case NavigationType::Navigate:
+    case NavigationTypeLinkClicked:
+    case NavigationTypeFormSubmitted:
+    case NavigationTypeFormResubmitted:
+    case NavigationTypeOther:
       return "navigate";
   }
   NOTREACHED();
   return "navigate";
 }
 
+AtomicString PerformanceNavigationTiming::type() const {
+  DocumentLoader* loader = documentLoader();
+  if (!m_frame || !loader)
+    return "";  // Not available yet.
+  Document* document = m_frame->document();
+  return getNavigationType(loader->getNavigationType(), document);
+}
+
 unsigned short PerformanceNavigationTiming::redirectCount() const {
-  if (!m_allowRedirectDetails)
+  bool allowRedirectDetails = getAllowRedirectDetails();
+  DocumentLoadTiming* timing = documentLoadTiming();
+  if (!allowRedirectDetails || !timing)
     return 0;
-  return m_redirectCount;
+  return timing->redirectCount();
 }
 
-DOMHighResTimeStamp PerformanceNavigationTiming::fetchStart() const {
-  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(m_timeOrigin,
-                                                             m_fetchStart);
+// Overriding PerformanceResourceTiming's attributes.
+AtomicString PerformanceNavigationTiming::initiatorType() const {
+  return "navigation";
+}
+
+DOMHighResTimeStamp PerformanceNavigationTiming::workerStart() const {
+  ResourceLoadTiming* timing = resourceLoadTiming();
+  if (!timing || timing->workerStart() == 0.0)
+    return 0.0;
+  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(
+      m_timeOrigin, timing->workerStart());
 }
 
 DOMHighResTimeStamp PerformanceNavigationTiming::redirectStart() const {
-  if (!m_allowRedirectDetails)
+  bool allowRedirectDetails = getAllowRedirectDetails();
+  DocumentLoadTiming* timing = documentLoadTiming();
+  if (!allowRedirectDetails || !timing)
     return 0;
-  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(m_timeOrigin,
-                                                             m_redirectStart);
+  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(
+      m_timeOrigin, timing->redirectStart());
 }
 
 DOMHighResTimeStamp PerformanceNavigationTiming::redirectEnd() const {
-  if (!m_allowRedirectDetails)
+  bool allowRedirectDetails = getAllowRedirectDetails();
+  DocumentLoadTiming* timing = documentLoadTiming();
+  if (!allowRedirectDetails || !timing)
     return 0;
+  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(
+      m_timeOrigin, timing->redirectEnd());
+}
+
+DOMHighResTimeStamp PerformanceNavigationTiming::fetchStart() const {
+  DocumentLoadTiming* timing = documentLoadTiming();
+  if (!timing)
+    return 0.0;
+  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(
+      m_timeOrigin, timing->fetchStart());
+}
+
+DOMHighResTimeStamp PerformanceNavigationTiming::domainLookupStart() const {
+  ResourceLoadTiming* timing = resourceLoadTiming();
+  if (!timing || timing->dnsStart() == 0.0)
+    return fetchStart();
+  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(
+      m_timeOrigin, timing->dnsStart());
+}
+
+DOMHighResTimeStamp PerformanceNavigationTiming::domainLookupEnd() const {
+  ResourceLoadTiming* timing = resourceLoadTiming();
+  if (!timing || timing->dnsEnd() == 0.0)
+    return domainLookupStart();
   return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(m_timeOrigin,
-                                                             m_redirectEnd);
+                                                             timing->dnsEnd());
 }
 
-DOMHighResTimeStamp PerformanceNavigationTiming::responseEnd() const {
+DOMHighResTimeStamp PerformanceNavigationTiming::connectStart() const {
+  DocumentLoader* loader = documentLoader();
+  if (!loader)
+    return domainLookupEnd();
+  ResourceLoadTiming* timing = resourceLoadTiming();
+  if (!timing || timing->connectStart() == 0.0 ||
+      m_resourceTimingInfo->finalResponse().connectionReused())
+    return domainLookupEnd();
+  double connectStart = timing->connectStart();
+  if (timing->dnsEnd() > 0.0 && timing->dnsEnd() > connectStart)
+    connectStart = timing->dnsEnd();
+
   return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(m_timeOrigin,
-                                                             m_responseEnd);
+                                                             connectStart);
+}
+
+DOMHighResTimeStamp PerformanceNavigationTiming::connectEnd() const {
+  DocumentLoader* loader = documentLoader();
+  if (!loader)
+    return connectStart();
+  ResourceLoadTiming* timing = resourceLoadTiming();
+  if (!timing || timing->connectEnd() == 0.0 ||
+      m_resourceTimingInfo->finalResponse().connectionReused())
+    return connectStart();
+  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(
+      m_timeOrigin, timing->connectEnd());
+}
+
+DOMHighResTimeStamp PerformanceNavigationTiming::secureConnectionStart() const {
+  DocumentLoader* loader = documentLoader();
+  if (!loader)
+    return 0.0;
+  ResourceLoadTiming* timing = resourceLoadTiming();
+  if (!timing ||
+      timing->sslStart() == 0.0)  // Secure connection not negotiated.
+    return 0.0;
+  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(
+      m_timeOrigin, timing->sslStart());
+}
+
+DOMHighResTimeStamp PerformanceNavigationTiming::requestStart() const {
+  ResourceLoadTiming* timing = resourceLoadTiming();
+  if (!timing || timing->sendStart() == 0.0)
+    return connectEnd();
+  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(
+      m_timeOrigin, timing->sendStart());
+}
+
+DOMHighResTimeStamp PerformanceNavigationTiming::responseStart() const {
+  ResourceLoadTiming* timing = resourceLoadTiming();
+  if (!timing || timing->receiveHeadersEnd() == 0.0)
+    return requestStart();
+  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(
+      m_timeOrigin, timing->receiveHeadersEnd());
+}
+
+DOMHighResTimeStamp PerformanceNavigationTiming::responseEnd() const {
+  DocumentLoadTiming* timing = documentLoadTiming();
+  if (!timing)
+    return 0.0;
+  return PerformanceBase::monotonicTimeToDOMHighResTimeStamp(
+      m_timeOrigin, timing->responseEnd());
+}
+
+unsigned long long PerformanceNavigationTiming::transferSize() const {
+  return !m_resourceTimingInfo ? 0 : m_resourceTimingInfo->transferSize();
+}
+
+unsigned long long PerformanceNavigationTiming::encodedBodySize() const {
+  return !m_resourceTimingInfo
+             ? 0
+             : m_resourceTimingInfo->finalResponse().encodedBodyLength();
+}
+
+unsigned long long PerformanceNavigationTiming::decodedBodySize() const {
+  return !m_resourceTimingInfo
+             ? 0
+             : m_resourceTimingInfo->finalResponse().decodedBodyLength();
+}
+
+// Overriding PerformanceEntry's attributes.
+DOMHighResTimeStamp PerformanceNavigationTiming::duration() const {
+  return loadEventEnd();
 }
 
 void PerformanceNavigationTiming::buildJSONValue(