Merge pull request #294 from janekptacijarabaci/js_dom_performance-resource-timing_2

moebius#161: The Performance Resource Timing (make timestamps be relative to startTime)

34 files changed, 768 insertions, 309 deletions

diff --git a/dom/base/nsContentUtils.cpp b/dom/base/nsContentUtils.cpp
index ef87a250e..bc8cea35a 100644
--- a/dom/base/nsContentUtils.cpp
+++ b/dom/base/nsContentUtils.cpp
@@ -281,6 +281,7 @@ bool nsContentUtils::sIsCutCopyAllowed = true;
 bool nsContentUtils::sIsFrameTimingPrefEnabled = false;
 bool nsContentUtils::sIsPerformanceTimingEnabled = false;
 bool nsContentUtils::sIsResourceTimingEnabled = false;
+bool nsContentUtils::sIsPerformanceNavigationTimingEnabled = false;
 bool nsContentUtils::sIsUserTimingLoggingEnabled = false;
 bool nsContentUtils::sIsExperimentalAutocompleteEnabled = false;
 bool nsContentUtils::sEncodeDecodeURLHash = false;
@@ -571,6 +572,9 @@ nsContentUtils::Init()
   Preferences::AddBoolVarCache(&sIsResourceTimingEnabled,
                                "dom.enable_resource_timing", true);
 
+  Preferences::AddBoolVarCache(&sIsPerformanceNavigationTimingEnabled,
+                               "dom.enable_performance_navigation_timing", true);
+
   Preferences::AddBoolVarCache(&sIsUserTimingLoggingEnabled,
                                "dom.performance.enable_user_timing_logging", false);
 
diff --git a/dom/base/nsContentUtils.h b/dom/base/nsContentUtils.h
index 0932f451e..9ae6d2155 100644
--- a/dom/base/nsContentUtils.h
+++ b/dom/base/nsContentUtils.h
@@ -2033,6 +2033,14 @@ public:
   }
 
   /*
+   * Returns true if the performance timing APIs are enabled.
+   */
+  static bool IsPerformanceNavigationTimingEnabled()
+  {
+    return sIsPerformanceNavigationTimingEnabled;
+  }
+
+  /*
    * Returns true if notification should be sent for peformance timing events.
    */
   static bool SendPerformanceTimingNotifications()
@@ -2825,6 +2833,7 @@ private:
   static uint32_t sHandlingInputTimeout;
   static bool sIsPerformanceTimingEnabled;
   static bool sIsResourceTimingEnabled;
+  static bool sIsPerformanceNavigationTimingEnabled;
   static bool sIsUserTimingLoggingEnabled;
   static bool sIsFrameTimingPrefEnabled;
   static bool sIsExperimentalAutocompleteEnabled;
diff --git a/dom/base/nsDOMNavigationTiming.cpp b/dom/base/nsDOMNavigationTiming.cpp
index 31b2932fb..32ce8a8cb 100644
--- a/dom/base/nsDOMNavigationTiming.cpp
+++ b/dom/base/nsDOMNavigationTiming.cpp
@@ -15,6 +15,9 @@
 #include "nsPrintfCString.h"
 #include "mozilla/dom/PerformanceNavigation.h"
 #include "mozilla/TimeStamp.h"
+#include "mozilla/Telemetry.h"
+
+using namespace mozilla;
 
 nsDOMNavigationTiming::nsDOMNavigationTiming()
 {
@@ -30,47 +33,36 @@ nsDOMNavigationTiming::Clear()
 {
   mNavigationType = TYPE_RESERVED;
   mNavigationStartHighRes = 0;
-  mBeforeUnloadStart = 0;
-  mUnloadStart = 0;
-  mUnloadEnd = 0;
-  mLoadEventStart = 0;
-  mLoadEventEnd = 0;
-  mDOMLoading = 0;
-  mDOMInteractive = 0;
-  mDOMContentLoadedEventStart = 0;
-  mDOMContentLoadedEventEnd = 0;
-  mDOMComplete = 0;
-
-  mLoadEventStartSet = false;
-  mLoadEventEndSet = false;
-  mDOMLoadingSet = false;
-  mDOMInteractiveSet = false;
-  mDOMContentLoadedEventStartSet = false;
-  mDOMContentLoadedEventEndSet = false;
-  mDOMCompleteSet = false;
+  mBeforeUnloadStart = TimeStamp();
+  mUnloadStart = TimeStamp();
+  mUnloadEnd = TimeStamp();
+  mLoadEventStart = TimeStamp();
+  mLoadEventEnd = TimeStamp();
+  mDOMLoading = TimeStamp();
+  mDOMInteractive = TimeStamp();
+  mDOMContentLoadedEventStart = TimeStamp();
+  mDOMContentLoadedEventEnd = TimeStamp();
+  mDOMComplete = TimeStamp();
+
   mDocShellHasBeenActiveSinceNavigationStart = false;
 }
 
 DOMTimeMilliSec
-nsDOMNavigationTiming::TimeStampToDOM(mozilla::TimeStamp aStamp) const
+nsDOMNavigationTiming::TimeStampToDOM(TimeStamp aStamp) const
 {
   if (aStamp.IsNull()) {
     return 0;
   }
-  mozilla::TimeDuration duration = aStamp - mNavigationStartTimeStamp;
-  return GetNavigationStart() + static_cast<int64_t>(duration.ToMilliseconds());
-}
 
-DOMTimeMilliSec nsDOMNavigationTiming::DurationFromStart()
-{
-  return TimeStampToDOM(mozilla::TimeStamp::Now());
+  TimeDuration duration = aStamp - mNavigationStart;
+  return GetNavigationStart() + static_cast<int64_t>(duration.ToMilliseconds());
 }
 
 void
 nsDOMNavigationTiming::NotifyNavigationStart(DocShellState aDocShellState)
 {
   mNavigationStartHighRes = (double)PR_Now() / PR_USEC_PER_MSEC;
-  mNavigationStartTimeStamp = mozilla::TimeStamp::Now();
+  mNavigationStart = TimeStamp::Now();
   mDocShellHasBeenActiveSinceNavigationStart = (aDocShellState == DocShellState::eActive);
 }
 
@@ -86,7 +78,7 @@ nsDOMNavigationTiming::NotifyFetchStart(nsIURI* aURI, Type aNavigationType)
 void
 nsDOMNavigationTiming::NotifyBeforeUnload()
 {
-  mBeforeUnloadStart = DurationFromStart();
+  mBeforeUnloadStart = TimeStamp::Now();
 }
 
 void
@@ -99,105 +91,107 @@ nsDOMNavigationTiming::NotifyUnloadAccepted(nsIURI* aOldURI)
 void
 nsDOMNavigationTiming::NotifyUnloadEventStart()
 {
-  mUnloadStart = DurationFromStart();
+  mUnloadStart = TimeStamp::Now();
 }
 
 void
 nsDOMNavigationTiming::NotifyUnloadEventEnd()
 {
-  mUnloadEnd = DurationFromStart();
+  mUnloadEnd = TimeStamp::Now();
 }
 
 void
 nsDOMNavigationTiming::NotifyLoadEventStart()
 {
-  if (!mLoadEventStartSet) {
-    mLoadEventStart = DurationFromStart();
-    mLoadEventStartSet = true;
+  if (!mLoadEventStart.IsNull()) {
+    return;
   }
+  mLoadEventStart = TimeStamp::Now();
 }
 
 void
 nsDOMNavigationTiming::NotifyLoadEventEnd()
 {
-  if (!mLoadEventEndSet) {
-    mLoadEventEnd = DurationFromStart();
-    mLoadEventEndSet = true;
+  if (!mLoadEventEnd.IsNull()) {
+    return;
   }
+  mLoadEventEnd = TimeStamp::Now();
 }
 
 void
-nsDOMNavigationTiming::SetDOMLoadingTimeStamp(nsIURI* aURI, mozilla::TimeStamp aValue)
+nsDOMNavigationTiming::SetDOMLoadingTimeStamp(nsIURI* aURI, TimeStamp aValue)
 {
-  if (!mDOMLoadingSet) {
-    mLoadedURI = aURI;
-    mDOMLoading = TimeStampToDOM(aValue);
-    mDOMLoadingSet = true;
+  if (!mDOMLoading.IsNull()) {
+    return;
   }
+  mLoadedURI = aURI;
+  mDOMLoading = aValue;
 }
 
 void
 nsDOMNavigationTiming::NotifyDOMLoading(nsIURI* aURI)
 {
-  if (!mDOMLoadingSet) {
-    mLoadedURI = aURI;
-    mDOMLoading = DurationFromStart();
-    mDOMLoadingSet = true;
+  if (!mDOMLoading.IsNull()) {
+    return;
   }
+  mLoadedURI = aURI;
+  mDOMLoading = TimeStamp::Now();
 }
 
 void
 nsDOMNavigationTiming::NotifyDOMInteractive(nsIURI* aURI)
 {
-  if (!mDOMInteractiveSet) {
-    mLoadedURI = aURI;
-    mDOMInteractive = DurationFromStart();
-    mDOMInteractiveSet = true;
+  if (!mDOMInteractive.IsNull()) {
+    return;
   }
+  mLoadedURI = aURI;
+  mDOMInteractive = TimeStamp::Now();
 }
 
 void
 nsDOMNavigationTiming::NotifyDOMComplete(nsIURI* aURI)
 {
-  if (!mDOMCompleteSet) {
-    mLoadedURI = aURI;
-    mDOMComplete = DurationFromStart();
-    mDOMCompleteSet = true;
+  if (!mDOMComplete.IsNull()) {
+    return;
   }
+  mLoadedURI = aURI;
+  mDOMComplete = TimeStamp::Now();
 }
 
 void
 nsDOMNavigationTiming::NotifyDOMContentLoadedStart(nsIURI* aURI)
 {
-  if (!mDOMContentLoadedEventStartSet) {
-    mLoadedURI = aURI;
-    mDOMContentLoadedEventStart = DurationFromStart();
-    mDOMContentLoadedEventStartSet = true;
+  if (!mDOMContentLoadedEventStart.IsNull()) {
+    return;
   }
+ 
+  mLoadedURI = aURI;
+  mDOMContentLoadedEventStart = TimeStamp::Now();
 }
 
 void
 nsDOMNavigationTiming::NotifyDOMContentLoadedEnd(nsIURI* aURI)
 {
-  if (!mDOMContentLoadedEventEndSet) {
-    mLoadedURI = aURI;
-    mDOMContentLoadedEventEnd = DurationFromStart();
-    mDOMContentLoadedEventEndSet = true;
+  if (!mDOMContentLoadedEventEnd.IsNull()) {
+    return;
   }
+ 
+  mLoadedURI = aURI;
+  mDOMContentLoadedEventEnd = TimeStamp::Now();
 }
 
 void
 nsDOMNavigationTiming::NotifyNonBlankPaintForRootContentDocument()
 {
   MOZ_ASSERT(NS_IsMainThread());
-  MOZ_ASSERT(!mNavigationStartTimeStamp.IsNull());
+  MOZ_ASSERT(!mNavigationStart.IsNull());
 
-  if (!mNonBlankPaintTimeStamp.IsNull()) {
+  if (!mNonBlankPaint.IsNull()) {
     return;
   }
 
-  mNonBlankPaintTimeStamp = TimeStamp::Now();
-  TimeDuration elapsed = mNonBlankPaintTimeStamp - mNavigationStartTimeStamp;
+  mNonBlankPaint = TimeStamp::Now();
+  TimeDuration elapsed = mNonBlankPaint - mNavigationStart;
 
   if (profiler_is_active()) {
     nsAutoCString spec;
@@ -212,8 +206,8 @@ nsDOMNavigationTiming::NotifyNonBlankPaintForRootContentDocument()
 
   if (mDocShellHasBeenActiveSinceNavigationStart) {
     Telemetry::AccumulateTimeDelta(Telemetry::TIME_TO_NON_BLANK_PAINT_MS,
-                                   mNavigationStartTimeStamp,
-                                   mNonBlankPaintTimeStamp);
+                                   mNavigationStart,
+                                   mNonBlankPaint);
   }
 }
 
@@ -224,24 +218,24 @@ nsDOMNavigationTiming::NotifyDocShellStateChanged(DocShellState aDocShellState)
     (aDocShellState == DocShellState::eActive);
 }
 
-DOMTimeMilliSec
-nsDOMNavigationTiming::GetUnloadEventStart()
+mozilla::TimeStamp
+nsDOMNavigationTiming::GetUnloadEventStartTimeStamp() const
 {
   nsIScriptSecurityManager* ssm = nsContentUtils::GetSecurityManager();
   nsresult rv = ssm->CheckSameOriginURI(mLoadedURI, mUnloadedURI, false);
   if (NS_SUCCEEDED(rv)) {
     return mUnloadStart;
   }
-  return 0;
+  return mozilla::TimeStamp();
 }
 
-DOMTimeMilliSec
-nsDOMNavigationTiming::GetUnloadEventEnd()
+mozilla::TimeStamp
+nsDOMNavigationTiming::GetUnloadEventEndTimeStamp() const
 {
   nsIScriptSecurityManager* ssm = nsContentUtils::GetSecurityManager();
   nsresult rv = ssm->CheckSameOriginURI(mLoadedURI, mUnloadedURI, false);
   if (NS_SUCCEEDED(rv)) {
     return mUnloadEnd;
   }
-  return 0;
+  return mozilla::TimeStamp();
 }
diff --git a/dom/base/nsDOMNavigationTiming.h b/dom/base/nsDOMNavigationTiming.h
index 9babece96..3be2527ca 100644
--- a/dom/base/nsDOMNavigationTiming.h
+++ b/dom/base/nsDOMNavigationTiming.h
@@ -47,38 +47,91 @@ public:
 
   mozilla::TimeStamp GetNavigationStartTimeStamp() const
   {
-    return mNavigationStartTimeStamp;
+    return mNavigationStart;
+  }
+
+  DOMTimeMilliSec GetUnloadEventStart()
+  {
+    return TimeStampToDOM(GetUnloadEventStartTimeStamp());
+  }
+
+  DOMTimeMilliSec GetUnloadEventEnd()
+  {
+    return TimeStampToDOM(GetUnloadEventEndTimeStamp());
   }
 
-  DOMTimeMilliSec GetUnloadEventStart();
-  DOMTimeMilliSec GetUnloadEventEnd();
   DOMTimeMilliSec GetDomLoading() const
   {
-    return mDOMLoading;
+    return TimeStampToDOM(mDOMLoading);
   }
   DOMTimeMilliSec GetDomInteractive() const
   {
-    return mDOMInteractive;
+    return TimeStampToDOM(mDOMInteractive);
   }
   DOMTimeMilliSec GetDomContentLoadedEventStart() const
   {
-    return mDOMContentLoadedEventStart;
+    return TimeStampToDOM(mDOMContentLoadedEventStart);
   }
   DOMTimeMilliSec GetDomContentLoadedEventEnd() const
   {
-    return mDOMContentLoadedEventEnd;
+    return TimeStampToDOM(mDOMContentLoadedEventEnd);
   }
   DOMTimeMilliSec GetDomComplete() const
   {
-    return mDOMComplete;
+    return TimeStampToDOM(mDOMComplete);
   }
   DOMTimeMilliSec GetLoadEventStart() const
   {
-    return mLoadEventStart;
+    return TimeStampToDOM(mLoadEventStart);
   }
   DOMTimeMilliSec GetLoadEventEnd() const
   {
-    return mLoadEventEnd;
+    return TimeStampToDOM(mLoadEventEnd);
+  }
+  DOMTimeMilliSec GetTimeToNonBlankPaint() const
+  {
+    return TimeStampToDOM(mNonBlankPaint);
+  }
+
+  DOMHighResTimeStamp GetUnloadEventStartHighRes()
+  {
+    mozilla::TimeStamp stamp = GetUnloadEventStartTimeStamp();
+    if (stamp.IsNull()) {
+      return 0;
+    }
+    return TimeStampToDOMHighRes(stamp);
+  }
+  DOMHighResTimeStamp GetUnloadEventEndHighRes()
+  {
+    mozilla::TimeStamp stamp = GetUnloadEventEndTimeStamp();
+    if (stamp.IsNull()) {
+      return 0;
+    }
+    return TimeStampToDOMHighRes(stamp);
+  }
+  DOMHighResTimeStamp GetDomInteractiveHighRes() const
+  {
+    return TimeStampToDOMHighRes(mDOMInteractive);
+  }
+  DOMHighResTimeStamp GetDomContentLoadedEventStartHighRes() const
+  {
+    return TimeStampToDOMHighRes(mDOMContentLoadedEventStart);
+  }
+  DOMHighResTimeStamp GetDomContentLoadedEventEndHighRes() const
+  {
+    return TimeStampToDOMHighRes(mDOMContentLoadedEventEnd);
+  }
+  DOMHighResTimeStamp GetDomCompleteHighRes() const
+  {
+    return TimeStampToDOMHighRes(mDOMComplete);
+  }
+  DOMHighResTimeStamp GetLoadEventStartHighRes() const
+  {
+    return TimeStampToDOMHighRes(mLoadEventStart);
+  }
+  DOMHighResTimeStamp GetLoadEventEndHighRes() const
+  {
+    return TimeStampToDOMHighRes(mLoadEventEnd);
   }
 
   enum class DocShellState : uint8_t {
@@ -108,9 +161,13 @@ public:
 
   DOMTimeMilliSec TimeStampToDOM(mozilla::TimeStamp aStamp) const;
 
-  inline DOMHighResTimeStamp TimeStampToDOMHighRes(mozilla::TimeStamp aStamp)
+  inline DOMHighResTimeStamp TimeStampToDOMHighRes(mozilla::TimeStamp aStamp) const
   {
-    mozilla::TimeDuration duration = aStamp - mNavigationStartTimeStamp;
+    MOZ_ASSERT(!aStamp.IsNull(), "The timestamp should not be null");
+    if (aStamp.IsNull()) {
+      return 0;
+    }
+    mozilla::TimeDuration duration = aStamp - mNavigationStart;
     return duration.ToMilliseconds();
   }
 
@@ -120,37 +177,29 @@ private:
 
   void Clear();
 
+  mozilla::TimeStamp GetUnloadEventStartTimeStamp() const;
+  mozilla::TimeStamp GetUnloadEventEndTimeStamp() const;
+
   nsCOMPtr<nsIURI> mUnloadedURI;
   nsCOMPtr<nsIURI> mLoadedURI;
 
   Type mNavigationType;
   DOMHighResTimeStamp mNavigationStartHighRes;
-  mozilla::TimeStamp mNavigationStartTimeStamp;
-  mozilla::TimeStamp mNonBlankPaintTimeStamp;
-  DOMTimeMilliSec DurationFromStart();
-
-  DOMTimeMilliSec mBeforeUnloadStart;
-  DOMTimeMilliSec mUnloadStart;
-  DOMTimeMilliSec mUnloadEnd;
-  DOMTimeMilliSec mLoadEventStart;
-  DOMTimeMilliSec mLoadEventEnd;
-
-  DOMTimeMilliSec mDOMLoading;
-  DOMTimeMilliSec mDOMInteractive;
-  DOMTimeMilliSec mDOMContentLoadedEventStart;
-  DOMTimeMilliSec mDOMContentLoadedEventEnd;
-  DOMTimeMilliSec mDOMComplete;
-
-  // Booleans to keep track of what things we've already been notified
-  // about.  We don't update those once we've been notified about them
-  // once.
-  bool mLoadEventStartSet : 1;
-  bool mLoadEventEndSet : 1;
-  bool mDOMLoadingSet : 1;
-  bool mDOMInteractiveSet : 1;
-  bool mDOMContentLoadedEventStartSet : 1;
-  bool mDOMContentLoadedEventEndSet : 1;
-  bool mDOMCompleteSet : 1;
+  mozilla::TimeStamp mNavigationStart;
+  mozilla::TimeStamp mNonBlankPaint;
+
+  mozilla::TimeStamp mBeforeUnloadStart;
+  mozilla::TimeStamp mUnloadStart;
+  mozilla::TimeStamp mUnloadEnd;
+  mozilla::TimeStamp mLoadEventStart;
+  mozilla::TimeStamp mLoadEventEnd;
+
+  mozilla::TimeStamp mDOMLoading;
+  mozilla::TimeStamp mDOMInteractive;
+  mozilla::TimeStamp mDOMContentLoadedEventStart;
+  mozilla::TimeStamp mDOMContentLoadedEventEnd;
+  mozilla::TimeStamp mDOMComplete;
+
   bool mDocShellHasBeenActiveSinceNavigationStart : 1;
 };
 
diff --git a/dom/base/nsGlobalWindow.cpp b/dom/base/nsGlobalWindow.cpp
index 3d5c44a78..738703ef1 100644
--- a/dom/base/nsGlobalWindow.cpp
+++ b/dom/base/nsGlobalWindow.cpp
@@ -3124,8 +3124,7 @@ nsGlobalWindow::SetNewDocument(nsIDocument* aDocument,
           newInnerWindow->mPerformance =
             Performance::CreateForMainThread(newInnerWindow->AsInner(),
                                              currentInner->mPerformance->GetDOMTiming(),
-                                             currentInner->mPerformance->GetChannel(),
-                                             currentInner->mPerformance->GetParentPerformance());
+                                             currentInner->mPerformance->GetChannel());
         }
       }
 
@@ -4339,22 +4338,7 @@ nsPIDOMWindowInner::CreatePerformanceObjectIfNeeded()
     timedChannel = nullptr;
   }
   if (timing) {
-    // If we are dealing with an iframe, we will need the parent's performance
-    // object (so we can add the iframe as a resource of that page).
-    Performance* parentPerformance = nullptr;
-    nsCOMPtr<nsPIDOMWindowOuter> parentWindow = GetScriptableParentOrNull();
-    if (parentWindow) {
-      nsPIDOMWindowInner* parentInnerWindow = nullptr;
-      if (parentWindow) {
-        parentInnerWindow = parentWindow->GetCurrentInnerWindow();
-      }
-      if (parentInnerWindow) {
-        parentPerformance = parentInnerWindow->GetPerformance();
-      }
-    }
-    mPerformance =
-      Performance::CreateForMainThread(this, timing, timedChannel,
-                                       parentPerformance);
+    mPerformance = Performance::CreateForMainThread(this, timing, timedChannel);
   }
 }
 
diff --git a/dom/bindings/Codegen.py b/dom/bindings/Codegen.py
index 3174c37dd..7a6668687 100644
--- a/dom/bindings/Codegen.py
+++ b/dom/bindings/Codegen.py
@@ -1069,6 +1069,20 @@ class CGHeaders(CGWrapper):
                     if parent:
                         ancestors.append(parent)
         interfaceDeps.extend(ancestors)
+
+        # Include parent interface headers needed for jsonifier code.
+        jsonInterfaceParents = []
+        for desc in descriptors:
+            if not desc.operations['Jsonifier']:
+                continue
+            parent = desc.interface.parent
+            while parent:
+                parentDesc = desc.getDescriptor(parent.identifier.name)
+                if parentDesc.operations['Jsonifier']:
+                    jsonInterfaceParents.append(parentDesc.interface)
+                parent = parent.parent
+        interfaceDeps.extend(jsonInterfaceParents)
+
         bindingIncludes = set(self.getDeclarationFilename(d) for d in interfaceDeps)
 
         # Grab all the implementation declaration files we need.
diff --git a/dom/console/Console.cpp b/dom/console/Console.cpp
index 79e3eadc5..ff5a92167 100755
--- a/dom/console/Console.cpp
+++ b/dom/console/Console.cpp
@@ -1336,10 +1336,7 @@ Console::MethodInternal(JSContext* aCx, MethodName aMethodName,
       WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
       MOZ_ASSERT(workerPrivate);
 
-      TimeDuration duration =
-        mozilla::TimeStamp::Now() - workerPrivate->NowBaseTimeStamp();
-
-      monotonicTimer = TimerClamping::ReduceMsTimeValue(duration.ToMilliseconds());
+      monotonicTimer = workerPrivate->TimeStampToDOMHighRes(TimeStamp::Now());
     }
   }
 
diff --git a/dom/console/Console.h b/dom/console/Console.h
index b334d79f9..2f375c8eb 100644
--- a/dom/console/Console.h
+++ b/dom/console/Console.h
@@ -258,9 +258,8 @@ private:
   // the max number of timers is reached.
   // * aCx - the JSContext rooting aName.
   // * aName - this is (should be) the name of the timer as JS::Value.
-  // * aTimestamp - the monotonicTimer for this context (taken from
-  //                window->performance.now() or from Now() -
-  //                workerPrivate->NowBaseTimeStamp() in workers.
+  // * aTimestamp - the monotonicTimer for this context taken from
+  //                performance.now().
   // * aTimerLabel - This label will be populated with the aName converted to a
   //                 string.
   // * aTimerValue - the StartTimer value stored into (or taken from)
@@ -290,9 +289,8 @@ private:
   // the aName timer doesn't exist in the mTimerRegistry.
   // * aCx - the JSContext rooting aName.
   // * aName - this is (should be) the name of the timer as JS::Value.
-  // * aTimestamp - the monotonicTimer for this context (taken from
-  //                window->performance.now() or from Now() -
-  //                workerPrivate->NowBaseTimeStamp() in workers.
+  // * aTimestamp - the monotonicTimer for this context taken from
+  //                performance.now().
   // * aTimerLabel - This label will be populated with the aName converted to a
   //                 string.
   // * aTimerDuration - the difference between aTimestamp and when the timer
diff --git a/dom/events/Event.cpp b/dom/events/Event.cpp
index 7e19cd74d..4b9776c0a 100755
--- a/dom/events/Event.cpp
+++ b/dom/events/Event.cpp
@@ -1146,16 +1146,11 @@ Event::TimeStampImpl() const
     return perf->GetDOMTiming()->TimeStampToDOMHighRes(mEvent->mTimeStamp);
   }
 
-  // For dedicated workers, we should make times relative to the navigation
-  // start of the document that created the worker, which is the same as the
-  // timebase for performance.now().
   workers::WorkerPrivate* workerPrivate =
     workers::GetCurrentThreadWorkerPrivate();
   MOZ_ASSERT(workerPrivate);
 
-  TimeDuration duration =
-    mEvent->mTimeStamp - workerPrivate->NowBaseTimeStamp();
-  return duration.ToMilliseconds();
+  return workerPrivate->TimeStampToDOMHighRes(mEvent->mTimeStamp);
 }
 
 bool
diff --git a/dom/events/test/test_eventTimeStamp.html b/dom/events/test/test_eventTimeStamp.html
index 107a21f87..056203e92 100644
--- a/dom/events/test/test_eventTimeStamp.html
+++ b/dom/events/test/test_eventTimeStamp.html
@@ -17,7 +17,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=77992
 <script type="text/js-worker" id="worker-src">
   // Simply returns the event timestamp
   onmessage = function(evt) {
-    postMessage(evt.timeStamp);
+    postMessage(evt.timeStamp + performance.timeOrigin);
   }
 </script>
 <script type="text/js-worker" id="shared-worker-src">
@@ -25,7 +25,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=77992
   onconnect = function(evt) {
     var port = evt.ports[0];
     port.onmessage = function(messageEvt) {
-      port.postMessage(messageEvt.timeStamp);
+      port.postMessage(messageEvt.timeStamp + performance.timeOrigin);
     };
   };
 </script>
@@ -57,9 +57,9 @@ function testRegularEvents() {
     finishTests();
     return;
   }
-  var timeBeforeEvent = window.performance.now();
-  window.addEventListener("load", function(evt) {
-    var timeAfterEvent = window.performance.now();
+  var timeBeforeEvent = performance.now();
+  addEventListener("load", function(evt) {
+    var timeAfterEvent = performance.now();
     ok(evt.timeStamp >= timeBeforeEvent &&
        evt.timeStamp <= timeAfterEvent,
        "Event timestamp (" + evt.timeStamp + ") is in expected range: (" +
@@ -71,19 +71,18 @@ function testRegularEvents() {
 function testWorkerEvents() {
   var blob = new Blob([ document.getElementById("worker-src").textContent ],
                       { type: "text/javascript" });
-  var worker = new Worker(window.URL.createObjectURL(blob));
+  var worker = new Worker(URL.createObjectURL(blob));
   worker.onmessage = function(evt) {
-    var timeAfterEvent = window.performance.now();
-    // Comparing times across timelines may break now
-    // ok(evt.data >= timeBeforeEvent &&
-    //    evt.data <= timeAfterEvent,
+    var timeAfterEvent = performance.now() + performance.timeOrigin;
+    ok(evt.data >= timeBeforeEvent &&
+       evt.data <= timeAfterEvent,
     //   "Event timestamp in dedicated worker (" + evt.data +
     //     ") is in expected range: (" +
     //     timeBeforeEvent + ", " + timeAfterEvent + ")");
     worker.terminate();
     testSharedWorkerEvents();
   };
-  var timeBeforeEvent = window.performance.now();
+  var timeBeforeEvent = performance.now() + performance.timeOrigin;
   worker.postMessage("");
 }
 
@@ -93,17 +92,16 @@ function testSharedWorkerEvents() {
              { type: "text/javascript" });
   // Delay creation of worker slightly so it is easier to distinguish
   // shared worker creation time from this document's navigation start
-  window.setTimeout(function() {
-    var timeBeforeWorkerCreation = window.performance.now();
-    var worker = new SharedWorker(window.URL.createObjectURL(blob));
+  setTimeout(function() {
+  var timeBeforeEvent = performance.now() + performance.timeOrigin;
+    var worker = new SharedWorker(URL.createObjectURL(blob));
     worker.port.onmessage = function(evt) {
-      var timeAfterEvent = window.performance.now();
-      // Comparing times across timelines may break now
-      // ok(evt.data >= 0 &&
-      //   evt.data <= timeAfterEvent - timeBeforeWorkerCreation,
+      var timeAfterEvent = performance.now() + performance.timeOrigin;
+      ok(evt.data >= timeBeforeEvent &&
+         evt.data <= timeAfterEvent,
       //   "Event timestamp in shared worker (" + evt.data +
       //     ") is in expected range: (0, " +
-      //     (timeAfterEvent - timeBeforeWorkerCreation) + ")");
+      //     timeBeforeEvent + ", " + timeAfterEvent + ")");
       worker.port.close();
       finishTests();
     };
diff --git a/dom/performance/Performance.cpp b/dom/performance/Performance.cpp
index 497bdea27..93a6b7313 100755
--- a/dom/performance/Performance.cpp
+++ b/dom/performance/Performance.cpp
@@ -13,12 +13,14 @@
 #include "PerformanceMeasure.h"
 #include "PerformanceObserver.h"
 #include "PerformanceResourceTiming.h"
+#include "PerformanceService.h"
 #include "PerformanceWorker.h"
 #include "mozilla/ErrorResult.h"
 #include "mozilla/dom/PerformanceBinding.h"
 #include "mozilla/dom/PerformanceEntryEvent.h"
 #include "mozilla/dom/PerformanceNavigationBinding.h"
 #include "mozilla/dom/PerformanceObserverBinding.h"
+#include "mozilla/dom/PerformanceNavigationTiming.h"
 #include "mozilla/IntegerPrintfMacros.h"
 #include "mozilla/Preferences.h"
 #include "mozilla/TimerClamping.h"
@@ -82,14 +84,12 @@ NS_IMPL_RELEASE_INHERITED(Performance, DOMEventTargetHelper)
 /* static */ already_AddRefed<Performance>
 Performance::CreateForMainThread(nsPIDOMWindowInner* aWindow,
                                  nsDOMNavigationTiming* aDOMTiming,
-                                 nsITimedChannel* aChannel,
-                                 Performance* aParentPerformance)
+                                 nsITimedChannel* aChannel)
 {
   MOZ_ASSERT(NS_IsMainThread());
 
   RefPtr<Performance> performance =
-    new PerformanceMainThread(aWindow, aDOMTiming, aChannel,
-                              aParentPerformance);
+    new PerformanceMainThread(aWindow, aDOMTiming, aChannel);
   return performance.forget();
 }
 
@@ -121,6 +121,24 @@ Performance::Performance(nsPIDOMWindowInner* aWindow)
 Performance::~Performance()
 {}
 
+DOMHighResTimeStamp
+Performance::Now() const
+{
+  TimeDuration duration = TimeStamp::Now() - CreationTimeStamp();
+  return RoundTime(duration.ToMilliseconds());
+}
+
+DOMHighResTimeStamp
+Performance::TimeOrigin()
+{
+  if (!mPerformanceService) {
+    mPerformanceService = PerformanceService::GetOrCreate();
+  }
+
+  MOZ_ASSERT(mPerformanceService);
+  return mPerformanceService->TimeOrigin(CreationTimeStamp());
+}
+
 JSObject*
 Performance::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
 {
@@ -245,7 +263,7 @@ Performance::ClearMarks(const Optional<nsAString>& aName)
 
 DOMHighResTimeStamp
 Performance::ResolveTimestampFromName(const nsAString& aName,
-                                          ErrorResult& aRv)
+                                      ErrorResult& aRv)
 {
   AutoTArray<RefPtr<PerformanceEntry>, 1> arr;
   DOMHighResTimeStamp ts;
diff --git a/dom/performance/Performance.h b/dom/performance/Performance.h
index bc70589a5..4debecc90 100644
--- a/dom/performance/Performance.h
+++ b/dom/performance/Performance.h
@@ -24,6 +24,7 @@ namespace dom {
 class PerformanceEntry;
 class PerformanceNavigation;
 class PerformanceObserver;
+class PerformanceService;
 class PerformanceTiming;
 
 namespace workers {
@@ -45,8 +46,7 @@ public:
   static already_AddRefed<Performance>
   CreateForMainThread(nsPIDOMWindowInner* aWindow,
                       nsDOMNavigationTiming* aDOMTiming,
-                      nsITimedChannel* aChannel,
-                      Performance* aParentPerformance);
+                      nsITimedChannel* aChannel);
 
   static already_AddRefed<Performance>
   CreateForWorker(workers::WorkerPrivate* aWorkerPrivate);
@@ -54,21 +54,23 @@ public:
   JSObject* WrapObject(JSContext *cx,
                        JS::Handle<JSObject*> aGivenProto) override;
 
-  void GetEntries(nsTArray<RefPtr<PerformanceEntry>>& aRetval);
+  virtual void GetEntries(nsTArray<RefPtr<PerformanceEntry>>& aRetval);
 
-  void GetEntriesByType(const nsAString& aEntryType,
-                        nsTArray<RefPtr<PerformanceEntry>>& aRetval);
+  virtual void GetEntriesByType(const nsAString& aEntryType,
+                                nsTArray<RefPtr<PerformanceEntry>>& aRetval);
 
-  void GetEntriesByName(const nsAString& aName,
-                        const Optional<nsAString>& aEntryType,
-                        nsTArray<RefPtr<PerformanceEntry>>& aRetval);
+  virtual void GetEntriesByName(const nsAString& aName,
+                                const Optional<nsAString>& aEntryType,
+                                nsTArray<RefPtr<PerformanceEntry>>& aRetval);
 
   virtual void AddEntry(nsIHttpChannel* channel,
                         nsITimedChannel* timedChannel) = 0;
 
   void ClearResourceTimings();
 
-  virtual DOMHighResTimeStamp Now() const = 0;
+  DOMHighResTimeStamp Now() const;
+
+  DOMHighResTimeStamp TimeOrigin();
 
   void Mark(const nsAString& aName, ErrorResult& aRv);
 
@@ -101,8 +103,6 @@ public:
 
   virtual nsITimedChannel* GetChannel() const = 0;
 
-  virtual Performance* GetParentPerformance() const = 0;
-
 protected:
   Performance();
   explicit Performance(nsPIDOMWindowInner* aWindow);
@@ -126,10 +126,16 @@ protected:
 
   virtual DOMHighResTimeStamp CreationTime() const = 0;
 
-  virtual bool IsPerformanceTimingAttribute(const nsAString& aName) = 0;
+  virtual bool IsPerformanceTimingAttribute(const nsAString& aName)
+  {
+    return false;
+  }
 
   virtual DOMHighResTimeStamp
-  GetPerformanceTimingFromString(const nsAString& aTimingName) = 0;
+  GetPerformanceTimingFromString(const nsAString& aTimingName)
+  {
+    return 0;
+  }
 
   bool IsResourceEntryLimitReached() const
   {
@@ -147,13 +153,15 @@ protected:
 
   nsTObserverArray<PerformanceObserver*> mObservers;
 
-private:
+protected:
   nsTArray<RefPtr<PerformanceEntry>> mUserEntries;
   nsTArray<RefPtr<PerformanceEntry>> mResourceEntries;
 
   uint64_t mResourceTimingBufferSize;
   static const uint64_t kDefaultResourceTimingBufferSize = 150;
   bool mPendingNotificationObserversTask;
+
+  RefPtr<PerformanceService> mPerformanceService;
 };
 
 } // namespace dom
diff --git a/dom/performance/PerformanceMainThread.cpp b/dom/performance/PerformanceMainThread.cpp
index 86d42c5f8..64c06d3ea 100644
--- a/dom/performance/PerformanceMainThread.cpp
+++ b/dom/performance/PerformanceMainThread.cpp
@@ -6,6 +6,7 @@
 
 #include "PerformanceMainThread.h"
 #include "PerformanceNavigation.h"
+#include "nsICacheInfoChannel.h"
 
 namespace mozilla {
 namespace dom {
@@ -16,7 +17,7 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(PerformanceMainThread,
                                                 Performance)
 NS_IMPL_CYCLE_COLLECTION_UNLINK(mTiming,
                                 mNavigation,
-                                mParentPerformance)
+                                mDocEntry)
   tmp->mMozMemory = nullptr;
   mozilla::DropJSObjects(this);
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
@@ -25,7 +26,7 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(PerformanceMainThread,
                                                   Performance)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTiming,
                                     mNavigation,
-                                    mParentPerformance)
+                                    mDocEntry)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
@@ -45,12 +46,10 @@ NS_INTERFACE_MAP_END_INHERITING(Performance)
 
 PerformanceMainThread::PerformanceMainThread(nsPIDOMWindowInner* aWindow,
                                              nsDOMNavigationTiming* aDOMTiming,
-                                             nsITimedChannel* aChannel,
-                                             Performance* aParentPerformance)
+                                             nsITimedChannel* aChannel)
   : Performance(aWindow)
   , mDOMTiming(aDOMTiming)
   , mChannel(aChannel)
-  , mParentPerformance(aParentPerformance)
 {
   MOZ_ASSERT(aWindow, "Parent window object should be provided");
 }
@@ -78,7 +77,7 @@ PerformanceTiming*
 PerformanceMainThread::Timing()
 {
   if (!mTiming) {
-    // For navigation timing, the third argument (an nsIHtttpChannel) is null
+    // For navigation timing, the third argument (an nsIHttpChannel) is null
     // since the cross-domain redirect were already checked.  The last argument
     // (zero time) for performance.timing is the navigation start value.
     mTiming = new PerformanceTiming(this, mChannel, nullptr,
@@ -108,12 +107,6 @@ PerformanceMainThread::Navigation()
   return mNavigation;
 }
 
-DOMHighResTimeStamp
-PerformanceMainThread::Now() const
-{
-  return RoundTime(GetDOMTiming()->TimeStampToDOMHighRes(TimeStamp::Now()));
-}
-
 /**
  * An entry should be added only after the resource is loaded.
  * This method is not thread safe and can only be called on the main thread.
@@ -161,27 +154,7 @@ PerformanceMainThread::AddEntry(nsIHttpChannel* channel,
     // The PerformanceResourceTiming object will use the PerformanceTiming
     // object to get all the required timings.
     RefPtr<PerformanceResourceTiming> performanceEntry =
-      new PerformanceResourceTiming(performanceTiming, this, entryName);
-
-    nsAutoCString protocol;
-    channel->GetProtocolVersion(protocol);
-    performanceEntry->SetNextHopProtocol(NS_ConvertUTF8toUTF16(protocol));
-
-    uint64_t encodedBodySize = 0;
-    channel->GetEncodedBodySize(&encodedBodySize);
-    performanceEntry->SetEncodedBodySize(encodedBodySize);
-
-    uint64_t transferSize = 0;
-    channel->GetTransferSize(&transferSize);
-    performanceEntry->SetTransferSize(transferSize);
-
-    uint64_t decodedBodySize = 0;
-    channel->GetDecodedBodySize(&decodedBodySize);
-    if (decodedBodySize == 0) {
-      decodedBodySize = encodedBodySize;
-    }
-    performanceEntry->SetDecodedBodySize(decodedBodySize);
-
+      new PerformanceResourceTiming(performanceTiming, this, entryName, channel);
     // If the initiator type had no valid value, then set it to the default
     // ("other") value.
     if (initiatorType.IsEmpty()) {
@@ -335,5 +308,65 @@ PerformanceMainThread::CreationTime() const
   return GetDOMTiming()->GetNavigationStart();
 }
 
+void
+PerformanceMainThread::EnsureDocEntry()
+{
+  if (!mDocEntry && nsContentUtils::IsPerformanceNavigationTimingEnabled()) {
+    nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(mChannel);
+    RefPtr<PerformanceTiming> timing =
+      new PerformanceTiming(this, mChannel, nullptr, 0);
+    mDocEntry = new PerformanceNavigationTiming(timing, this,
+                                                httpChannel);
+  }
+}
+
+
+void
+PerformanceMainThread::GetEntries(nsTArray<RefPtr<PerformanceEntry>>& aRetval)
+{
+  aRetval = mResourceEntries;
+  aRetval.AppendElements(mUserEntries);
+
+  EnsureDocEntry();
+  if (mDocEntry) {
+    aRetval.AppendElement(mDocEntry);
+  }
+
+  aRetval.Sort(PerformanceEntryComparator());
+}
+
+void
+PerformanceMainThread::GetEntriesByType(const nsAString& aEntryType,
+                                        nsTArray<RefPtr<PerformanceEntry>>& aRetval)
+{
+  if (aEntryType.EqualsLiteral("navigation")) {
+    aRetval.Clear();
+    EnsureDocEntry();
+    if (mDocEntry) {
+      aRetval.AppendElement(mDocEntry);
+    }
+    return;
+  }
+
+  Performance::GetEntriesByType(aEntryType, aRetval);
+}
+
+void
+PerformanceMainThread::GetEntriesByName(const nsAString& aName,
+                                        const Optional<nsAString>& aEntryType,
+                                        nsTArray<RefPtr<PerformanceEntry>>& aRetval)
+{
+  if (aName.EqualsLiteral("document")) {
+    aRetval.Clear();
+    EnsureDocEntry();
+    if (mDocEntry) {
+      aRetval.AppendElement(mDocEntry);
+    }
+    return;
+  }
+
+  Performance::GetEntriesByName(aName, aEntryType, aRetval);
+}
+
 } // dom namespace
 } // mozilla namespace
diff --git a/dom/performance/PerformanceMainThread.h b/dom/performance/PerformanceMainThread.h
index 84773f29b..9f0e185fc 100644
--- a/dom/performance/PerformanceMainThread.h
+++ b/dom/performance/PerformanceMainThread.h
@@ -17,16 +17,12 @@ class PerformanceMainThread final : public Performance
 public:
   PerformanceMainThread(nsPIDOMWindowInner* aWindow,
                         nsDOMNavigationTiming* aDOMTiming,
-                        nsITimedChannel* aChannel,
-                        Performance* aParentPerformance);
+                        nsITimedChannel* aChannel);
 
   NS_DECL_ISUPPORTS_INHERITED
   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(PerformanceMainThread,
                                                          Performance)
 
-  // Performance WebIDL methods
-  DOMHighResTimeStamp Now() const override;
-
   virtual PerformanceTiming* Timing() override;
 
   virtual PerformanceNavigation* Navigation() override;
@@ -51,10 +47,14 @@ public:
     return mChannel;
   }
 
-  virtual Performance* GetParentPerformance() const override
-  {
-    return mParentPerformance;
-  }
+  // The GetEntries* methods need to be overriden in order to add the
+  // the document entry of type navigation.
+  virtual void GetEntries(nsTArray<RefPtr<PerformanceEntry>>& aRetval) override;
+  virtual void GetEntriesByType(const nsAString& aEntryType,
+                                nsTArray<RefPtr<PerformanceEntry>>& aRetval) override;
+  virtual void GetEntriesByName(const nsAString& aName,
+                                const Optional<nsAString>& aEntryType,
+                                nsTArray<RefPtr<PerformanceEntry>>& aRetval) override;
 
 protected:
   ~PerformanceMainThread();
@@ -72,12 +72,13 @@ protected:
   GetPerformanceTimingFromString(const nsAString& aTimingName) override;
 
   void DispatchBufferFullEvent() override;
+  void EnsureDocEntry();
 
+  RefPtr<PerformanceEntry> mDocEntry;
   RefPtr<nsDOMNavigationTiming> mDOMTiming;
   nsCOMPtr<nsITimedChannel> mChannel;
   RefPtr<PerformanceTiming> mTiming;
   RefPtr<PerformanceNavigation> mNavigation;
-  RefPtr<Performance> mParentPerformance;
   JS::Heap<JSObject*> mMozMemory;
 };
 
diff --git a/dom/performance/PerformanceNavigationTiming.cpp b/dom/performance/PerformanceNavigationTiming.cpp
new file mode 100644
index 000000000..4e00b2bb2
--- /dev/null
+++ b/dom/performance/PerformanceNavigationTiming.cpp
@@ -0,0 +1,96 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/PerformanceNavigationTiming.h"
+#include "mozilla/dom/PerformanceNavigationTimingBinding.h"
+
+using namespace mozilla::dom;
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(PerformanceNavigationTiming)
+NS_INTERFACE_MAP_END_INHERITING(PerformanceResourceTiming)
+
+NS_IMPL_ADDREF_INHERITED(PerformanceNavigationTiming, PerformanceResourceTiming)
+NS_IMPL_RELEASE_INHERITED(PerformanceNavigationTiming, PerformanceResourceTiming)
+
+JSObject*
+PerformanceNavigationTiming::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
+{
+  return PerformanceNavigationTimingBinding::Wrap(aCx, this, aGivenProto);
+}
+
+DOMHighResTimeStamp
+PerformanceNavigationTiming::UnloadEventStart() const
+{
+  return mTiming->GetDOMTiming()->GetUnloadEventStartHighRes();
+}
+
+DOMHighResTimeStamp
+PerformanceNavigationTiming::UnloadEventEnd() const
+{
+  return mTiming->GetDOMTiming()->GetUnloadEventEndHighRes();
+}
+
+DOMHighResTimeStamp
+PerformanceNavigationTiming::DomInteractive() const
+{
+  return mTiming->GetDOMTiming()->GetDomInteractiveHighRes();
+}
+
+DOMHighResTimeStamp
+PerformanceNavigationTiming::DomContentLoadedEventStart() const
+{
+  return mTiming->GetDOMTiming()->GetDomContentLoadedEventStartHighRes();
+}
+
+DOMHighResTimeStamp
+PerformanceNavigationTiming::DomContentLoadedEventEnd() const
+{
+  return mTiming->GetDOMTiming()->GetDomContentLoadedEventEndHighRes();
+}
+
+DOMHighResTimeStamp
+PerformanceNavigationTiming::DomComplete() const
+{
+  return mTiming->GetDOMTiming()->GetDomCompleteHighRes();
+}
+
+DOMHighResTimeStamp
+PerformanceNavigationTiming::LoadEventStart() const
+{
+  return mTiming->GetDOMTiming()->GetLoadEventStartHighRes();
+}
+
+DOMHighResTimeStamp
+PerformanceNavigationTiming::LoadEventEnd() const
+{
+  return mTiming->GetDOMTiming()->GetLoadEventEndHighRes();
+}
+
+NavigationType
+PerformanceNavigationTiming::Type() const
+{
+  switch(mTiming->GetDOMTiming()->GetType()) {
+    case nsDOMNavigationTiming::TYPE_NAVIGATE:
+      return NavigationType::Navigate;
+      break;
+    case nsDOMNavigationTiming::TYPE_RELOAD:
+      return NavigationType::Reload;
+      break;
+    case nsDOMNavigationTiming::TYPE_BACK_FORWARD:
+      return NavigationType::Back_forward;
+      break;
+    default:
+      // The type is TYPE_RESERVED or some other value that was later added.
+      // We fallback to the default of Navigate.
+      return NavigationType::Navigate;
+  }
+}
+
+uint16_t
+PerformanceNavigationTiming::RedirectCount() const
+{
+  return mTiming->GetRedirectCount();
+}
diff --git a/dom/performance/PerformanceNavigationTiming.h b/dom/performance/PerformanceNavigationTiming.h
new file mode 100644
index 000000000..8555f1987
--- /dev/null
+++ b/dom/performance/PerformanceNavigationTiming.h
@@ -0,0 +1,71 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_PerformanceNavigationTiming_h___
+#define mozilla_dom_PerformanceNavigationTiming_h___
+
+#include "nsCOMPtr.h"
+#include "nsIChannel.h"
+#include "nsITimedChannel.h"
+#include "mozilla/dom/PerformanceResourceTiming.h"
+#include "mozilla/dom/PerformanceNavigationTimingBinding.h"
+#include "nsIHttpChannel.h"
+
+namespace mozilla {
+namespace dom {
+
+// https://www.w3.org/TR/navigation-timing-2/#sec-PerformanceNavigationTiming
+class PerformanceNavigationTiming final
+  : public PerformanceResourceTiming
+{
+public:
+  NS_DECL_ISUPPORTS_INHERITED
+
+  // Note that aPerformanceTiming must be initalized with zeroTime = 0
+  // so that timestamps are relative to startTime, as opposed to the
+  // performance.timing object for which timestamps are absolute and has a
+  // zeroTime initialized to navigationStart
+  explicit PerformanceNavigationTiming(PerformanceTiming* aPerformanceTiming,
+                                       Performance* aPerformance,
+                                       nsIHttpChannel* aChannel)
+    : PerformanceResourceTiming(aPerformanceTiming, aPerformance,
+                                NS_LITERAL_STRING("document"), aChannel) {
+      SetEntryType(NS_LITERAL_STRING("navigation"));
+      SetInitiatorType(NS_LITERAL_STRING("navigation"));
+    }
+
+  DOMHighResTimeStamp Duration() const override
+  {
+    return LoadEventEnd() - StartTime();
+  }
+
+  DOMHighResTimeStamp StartTime() const override
+  {
+    return 0;
+  }
+
+  JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
+
+  DOMHighResTimeStamp UnloadEventStart() const;
+  DOMHighResTimeStamp UnloadEventEnd() const;
+
+  DOMHighResTimeStamp DomInteractive() const;
+  DOMHighResTimeStamp DomContentLoadedEventStart() const;
+  DOMHighResTimeStamp DomContentLoadedEventEnd() const;
+  DOMHighResTimeStamp DomComplete() const;
+  DOMHighResTimeStamp LoadEventStart() const;
+  DOMHighResTimeStamp LoadEventEnd() const;
+  NavigationType Type() const;
+  uint16_t RedirectCount() const;
+
+private:
+  ~PerformanceNavigationTiming() {}
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_PerformanceNavigationTiming_h___
diff --git a/dom/performance/PerformanceResourceTiming.cpp b/dom/performance/PerformanceResourceTiming.cpp
index 94df27408..2eaa4eb9a 100644
--- a/dom/performance/PerformanceResourceTiming.cpp
+++ b/dom/performance/PerformanceResourceTiming.cpp
@@ -25,7 +25,8 @@ NS_IMPL_RELEASE_INHERITED(PerformanceResourceTiming, PerformanceEntry)
 
 PerformanceResourceTiming::PerformanceResourceTiming(PerformanceTiming* aPerformanceTiming,
                                                      Performance* aPerformance,
-                                                     const nsAString& aName)
+                                                     const nsAString& aName,
+                                                     nsIHttpChannel* aChannel)
 : PerformanceEntry(aPerformance, aName, NS_LITERAL_STRING("resource")),
   mTiming(aPerformanceTiming),
   mEncodedBodySize(0),
@@ -33,6 +34,34 @@ PerformanceResourceTiming::PerformanceResourceTiming(PerformanceTiming* aPerform
   mDecodedBodySize(0)
 {
   MOZ_ASSERT(aPerformance, "Parent performance object should be provided");
+  SetPropertiesFromChannel(aChannel);
+}
+
+void
+PerformanceResourceTiming::SetPropertiesFromChannel(nsIHttpChannel* aChannel)
+{
+  if (!aChannel) {
+    return;
+  }
+
+  nsAutoCString protocol;
+  Unused << aChannel->GetProtocolVersion(protocol);
+  SetNextHopProtocol(NS_ConvertUTF8toUTF16(protocol));
+
+  uint64_t encodedBodySize = 0;
+  Unused << aChannel->GetEncodedBodySize(&encodedBodySize);
+  SetEncodedBodySize(encodedBodySize);
+
+  uint64_t transferSize = 0;
+  Unused << aChannel->GetTransferSize(&transferSize);
+  SetTransferSize(transferSize);
+
+  uint64_t decodedBodySize = 0;
+  Unused << aChannel->GetDecodedBodySize(&decodedBodySize);
+  if (decodedBodySize == 0) {
+    decodedBodySize = encodedBodySize;
+  }
+  SetDecodedBodySize(decodedBodySize);
 }
 
 PerformanceResourceTiming::~PerformanceResourceTiming()
diff --git a/dom/performance/PerformanceResourceTiming.h b/dom/performance/PerformanceResourceTiming.h
index c2e6c0972..98a03327e 100644
--- a/dom/performance/PerformanceResourceTiming.h
+++ b/dom/performance/PerformanceResourceTiming.h
@@ -18,7 +18,7 @@ namespace mozilla {
 namespace dom {
 
 // http://www.w3.org/TR/resource-timing/#performanceresourcetiming
-class PerformanceResourceTiming final : public PerformanceEntry
+class PerformanceResourceTiming : public PerformanceEntry
 {
 public:
   typedef mozilla::TimeStamp TimeStamp;
@@ -30,7 +30,8 @@ public:
 
   PerformanceResourceTiming(PerformanceTiming* aPerformanceTiming,
                             Performance* aPerformance,
-                            const nsAString& aName);
+                            const nsAString& aName,
+                            nsIHttpChannel* aChannel = nullptr);
 
   virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
 
@@ -176,6 +177,7 @@ public:
 
 protected:
   virtual ~PerformanceResourceTiming();
+  void SetPropertiesFromChannel(nsIHttpChannel* aChannel);
 
   nsString mInitiatorType;
   nsString mNextHopProtocol;
diff --git a/dom/performance/PerformanceService.cpp b/dom/performance/PerformanceService.cpp
new file mode 100644
index 000000000..cf119af89
--- /dev/null
+++ b/dom/performance/PerformanceService.cpp
@@ -0,0 +1,46 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "PerformanceService.h"
+
+#include "mozilla/ClearOnShutdown.h"
+#include "mozilla/StaticMutex.h"
+#include "mozilla/StaticPtr.h"
+
+namespace mozilla {
+namespace dom {
+
+static StaticRefPtr<PerformanceService> gPerformanceService;
+static StaticMutex gPerformanceServiceMutex;
+
+/* static */ PerformanceService*
+PerformanceService::GetOrCreate()
+{
+  StaticMutexAutoLock al(gPerformanceServiceMutex);
+
+  if (!gPerformanceService) {
+    gPerformanceService = new PerformanceService();
+    ClearOnShutdown(&gPerformanceService);
+  }
+
+  return gPerformanceService;
+}
+
+DOMHighResTimeStamp
+PerformanceService::TimeOrigin(const TimeStamp& aCreationTimeStamp) const
+{
+  return (aCreationTimeStamp - mCreationTimeStamp).ToMilliseconds() +
+           (mCreationEpochTime / PR_USEC_PER_MSEC);
+}
+
+PerformanceService::PerformanceService()
+{
+  mCreationTimeStamp = TimeStamp::Now();
+  mCreationEpochTime = PR_Now();
+}
+
+} // dom namespace
+} // mozilla namespace
diff --git a/dom/performance/PerformanceService.h b/dom/performance/PerformanceService.h
new file mode 100644
index 000000000..9abbd674d
--- /dev/null
+++ b/dom/performance/PerformanceService.h
@@ -0,0 +1,48 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef dom_performance_PerformanceService_h
+#define dom_performance_PerformanceService_h
+
+#include "mozilla/TimeStamp.h"
+#include "nsCOMPtr.h"
+#include "nsDOMNavigationTiming.h"
+
+namespace mozilla {
+namespace dom {
+
+// This class is thread-safe.
+
+// We use this singleton for having the correct value of performance.timeOrigin.
+// This value must be calculated on top of the pair:
+// - mCreationTimeStamp (monotonic clock)
+// - mCreationEpochTime (unix epoch time)
+// These 2 values must be taken "at the same time" in order to be used
+// correctly.
+
+class PerformanceService
+{
+public:
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(PerformanceService)
+
+  static PerformanceService*
+  GetOrCreate();
+
+  DOMHighResTimeStamp
+  TimeOrigin(const TimeStamp& aCreationTimeStamp) const;
+
+private:
+  PerformanceService();
+  ~PerformanceService() = default;
+
+  TimeStamp mCreationTimeStamp;
+  PRTime mCreationEpochTime;
+};
+
+} // dom namespace
+} // mozilla namespace
+
+#endif // dom_performance_PerformanceService_h
diff --git a/dom/performance/PerformanceTiming.h b/dom/performance/PerformanceTiming.h
index 584ae0816..435e1bca1 100755
--- a/dom/performance/PerformanceTiming.h
+++ b/dom/performance/PerformanceTiming.h
@@ -242,6 +242,14 @@ public:
     return TimerClamping::ReduceMsTimeValue(GetDOMTiming()->GetLoadEventEnd());
   }
 
+  DOMTimeMilliSec TimeToNonBlankPaint() const
+  {
+    if (!nsContentUtils::IsPerformanceTimingEnabled()) {
+      return 0;
+    }
+    return TimerClamping::ReduceMsTimeValue(GetDOMTiming()->GetTimeToNonBlankPaint());
+  }
+
 private:
   ~PerformanceTiming();
 
diff --git a/dom/performance/PerformanceWorker.cpp b/dom/performance/PerformanceWorker.cpp
index 85ca2ccd8..f10c58446 100644
--- a/dom/performance/PerformanceWorker.cpp
+++ b/dom/performance/PerformanceWorker.cpp
@@ -23,37 +23,6 @@ PerformanceWorker::~PerformanceWorker()
   mWorkerPrivate->AssertIsOnWorkerThread();
 }
 
-DOMHighResTimeStamp
-PerformanceWorker::Now() const
-{
-  TimeDuration duration =
-    TimeStamp::Now() - mWorkerPrivate->NowBaseTimeStamp();
-  return RoundTime(duration.ToMilliseconds());
-}
-
-// To be removed once bug 1124165 lands
-bool
-PerformanceWorker::IsPerformanceTimingAttribute(const nsAString& aName)
-{
-  // In workers we just support navigationStart.
-  return aName.EqualsASCII("navigationStart");
-}
-
-DOMHighResTimeStamp
-PerformanceWorker::GetPerformanceTimingFromString(const nsAString& aProperty)
-{
-  if (!IsPerformanceTimingAttribute(aProperty)) {
-    return 0;
-  }
-
-  if (aProperty.EqualsLiteral("navigationStart")) {
-    return mWorkerPrivate->NowBaseTime();
-  }
-
-  MOZ_CRASH("IsPerformanceTimingAttribute and GetPerformanceTimingFromString are out of sync");
-  return 0;
-}
-
 void
 PerformanceWorker::InsertUserEntry(PerformanceEntry* aEntry)
 {
@@ -72,13 +41,13 @@ PerformanceWorker::InsertUserEntry(PerformanceEntry* aEntry)
 TimeStamp
 PerformanceWorker::CreationTimeStamp() const
 {
-  return mWorkerPrivate->NowBaseTimeStamp();
+  return mWorkerPrivate->CreationTimeStamp();
 }
 
 DOMHighResTimeStamp
 PerformanceWorker::CreationTime() const
 {
-  return mWorkerPrivate->NowBaseTime();
+  return mWorkerPrivate->CreationTime();
 }
 
 } // dom namespace
diff --git a/dom/performance/PerformanceWorker.h b/dom/performance/PerformanceWorker.h
index 7eef0d974..346bdd026 100644
--- a/dom/performance/PerformanceWorker.h
+++ b/dom/performance/PerformanceWorker.h
@@ -21,9 +21,6 @@ class PerformanceWorker final : public Performance
 public:
   explicit PerformanceWorker(workers::WorkerPrivate* aWorkerPrivate);
 
-  // Performance WebIDL methods
-  DOMHighResTimeStamp Now() const override;
-
   virtual PerformanceTiming* Timing() override
   {
     MOZ_CRASH("This should not be called on workers.");
@@ -64,12 +61,6 @@ public:
     return nullptr;
   }
 
-  virtual Performance* GetParentPerformance() const override
-  {
-    MOZ_CRASH("This should not be called on workers.");
-    return nullptr;
-  }
-
 protected:
   ~PerformanceWorker();
 
@@ -80,11 +71,6 @@ protected:
 
   void InsertUserEntry(PerformanceEntry* aEntry) override;
 
-  bool IsPerformanceTimingAttribute(const nsAString& aName) override;
-
-  DOMHighResTimeStamp
-  GetPerformanceTimingFromString(const nsAString& aTimingName) override;
-
   void DispatchBufferFullEvent() override
   {
     MOZ_CRASH("This should not be called on workers.");
diff --git a/dom/performance/moz.build b/dom/performance/moz.build
index 3286a0a4c..e1f96fec8 100644
--- a/dom/performance/moz.build
+++ b/dom/performance/moz.build
@@ -10,9 +10,11 @@ EXPORTS.mozilla.dom += [
     'PerformanceMark.h',
     'PerformanceMeasure.h',
     'PerformanceNavigation.h',
+    'PerformanceNavigationTiming.h',
     'PerformanceObserver.h',
     'PerformanceObserverEntryList.h',
     'PerformanceResourceTiming.h',
+    'PerformanceService.h',
     'PerformanceTiming.h',
 ]
 
@@ -23,9 +25,11 @@ UNIFIED_SOURCES += [
     'PerformanceMark.cpp',
     'PerformanceMeasure.cpp',
     'PerformanceNavigation.cpp',
+    'PerformanceNavigationTiming.cpp',
     'PerformanceObserver.cpp',
     'PerformanceObserverEntryList.cpp',
     'PerformanceResourceTiming.cpp',
+    'PerformanceService.cpp',
     'PerformanceTiming.cpp',
     'PerformanceWorker.cpp',
 ]
diff --git a/dom/performance/tests/mochitest.ini b/dom/performance/tests/mochitest.ini
index 7005637e1..bee0b2e70 100644
--- a/dom/performance/tests/mochitest.ini
+++ b/dom/performance/tests/mochitest.ini
@@ -13,3 +13,4 @@ support-files =
 [test_worker_observer.html]
 [test_sharedWorker_performance_user_timing.html]
 [test_worker_performance_now.html]
+[test_timeOrigin.html]
diff --git a/dom/performance/tests/test_performance_user_timing.js b/dom/performance/tests/test_performance_user_timing.js
index cd8261bbd..a15dbebb6 100644
--- a/dom/performance/tests/test_performance_user_timing.js
+++ b/dom/performance/tests/test_performance_user_timing.js
@@ -126,15 +126,18 @@ var steps = [
     },
     // Test measure
     function () {
-        ok(true, "Running measure addition with no start/end time test");
-        performance.measure("test");
-        var measures = performance.getEntriesByType("measure");
-        is(measures.length, 1, "number of measures should be 1");
-        var measure = measures[0];
-        is(measure.name, "test", "measure name should be 'test'");
-        is(measure.entryType, "measure", "measure type should be 'measure'");
-        is(measure.startTime, 0, "measure start time should be zero");
-        ok(measure.duration >= 0, "measure duration should not be negative");
+        // We don't have navigationStart in workers.
+        if ("window" in self) {
+          ok(true, "Running measure addition with no start/end time test");
+          performance.measure("test", "navigationStart");
+          var measures = performance.getEntriesByType("measure");
+          is(measures.length, 1, "number of measures should be 1");
+          var measure = measures[0];
+          is(measure.name, "test", "measure name should be 'test'");
+          is(measure.entryType, "measure", "measure type should be 'measure'");
+          is(measure.startTime, 0, "measure start time should be zero");
+          ok(measure.duration >= 0, "measure duration should not be negative");
+        }
     },
     function () {
         ok(true, "Running measure addition with only start time test");
diff --git a/dom/performance/tests/test_timeOrigin.html b/dom/performance/tests/test_timeOrigin.html
new file mode 100644
index 000000000..5a8a461f3
--- /dev/null
+++ b/dom/performance/tests/test_timeOrigin.html
@@ -0,0 +1,68 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <title>Test for performance.timeOrigin</title>
+    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
+    <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+    <script type="text/javascript" src="test_performance_user_timing.js"></script>
+  </head>
+  <body>
+    <script type="text/js-worker" id="worker-src">
+      postMessage({ now: performance.now(), timeOrigin: performance.timeOrigin });
+    </script>
+
+    <script type="text/js-worker" id="shared-worker-src">
+      onconnect = function(evt) {
+        evt.ports[0].postMessage({ now: performance.now(), timeOrigin: performance.timeOrigin });
+      };
+    </script>
+
+    <script class="testbody" type="text/javascript">
+
+function testBasic() {
+  ok("timeOrigin" in performance, "Performance.timeOrigin exists.");
+  ok(performance.timeOrigin > 0, "TimeOrigin must be greater than 0.");
+  next();
+}
+
+function testWorker() {
+  var now = performance.now();
+
+  var blob = new Blob([ document.getElementById("worker-src").textContent ],
+                      { type: "text/javascript" });
+  var w = new Worker(URL.createObjectURL(blob));
+  w.onmessage = function(e) {
+    ok (e.now + e.timeOrigin > now + performance.now, "Comparing worker.now and window.now");
+    next();
+  }
+}
+
+function testSharedWorker() {
+  var now = performance.now();
+
+  var blob = new Blob([ document.getElementById("shared-worker-src").textContent ],
+                      { type: "text/javascript" });
+  var w = new SharedWorker(URL.createObjectURL(blob));
+  w.port.onmessage = function(e) {
+    ok (e.now + e.timeOrigin > now + performance.now, "Comparing worker.now and window.now");
+    next();
+  }
+}
+
+var tests = [ testBasic, testWorker, testSharedWorker ];
+function next() {
+  if (!tests.length) {
+    SimpleTest.finish();
+    return;
+  }
+
+  var test = tests.shift();
+  test();
+}
+
+SimpleTest.waitForExplicitFinish();
+addLoadEvent(next);
+      </script>
+    </pre>
+  </body>
+</html>
diff --git a/dom/tests/mochitest/general/test_interfaces.html b/dom/tests/mochitest/general/test_interfaces.html
index cbd08d8d4..4b47d2b4f 100644
--- a/dom/tests/mochitest/general/test_interfaces.html
+++ b/dom/tests/mochitest/general/test_interfaces.html
@@ -751,9 +751,11 @@ var interfaceNamesInGlobalScope =
 // IMPORTANT: Do not change this list without review from a DOM peer!
     "PerformanceNavigation",
 // IMPORTANT: Do not change this list without review from a DOM peer!
-    "PerformanceObserver",
+    "PerformanceNavigationTiming",
 // IMPORTANT: Do not change this list without review from a DOM peer!
-    "PerformanceObserverEntryList",
+    "PerformanceObserver"
+// IMPORTANT: Do not change this list without review from a DOM peer!
+    "PerformanceObserverEntryList"
 // IMPORTANT: Do not change this list without review from a DOM peer!
     "PerformanceResourceTiming",
 // IMPORTANT: Do not change this list without review from a DOM peer!
diff --git a/dom/webidl/Performance.webidl b/dom/webidl/Performance.webidl
index eaede253c..0bd2677df 100644
--- a/dom/webidl/Performance.webidl
+++ b/dom/webidl/Performance.webidl
@@ -17,6 +17,9 @@ typedef sequence <PerformanceEntry> PerformanceEntryList;
 interface Performance {
   [DependsOn=DeviceState, Affects=Nothing]
   DOMHighResTimeStamp now();
+
+  [Constant]
+  readonly attribute DOMHighResTimeStamp timeOrigin;
 };
 
 [Exposed=Window]
diff --git a/dom/webidl/PerformanceNavigationTiming.webidl b/dom/webidl/PerformanceNavigationTiming.webidl
new file mode 100644
index 000000000..fa3ecaec4
--- /dev/null
+++ b/dom/webidl/PerformanceNavigationTiming.webidl
@@ -0,0 +1,33 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * The origin of this IDL file is
+ * https://www.w3.org/TR/navigation-timing-2/#sec-PerformanceNavigationTiming
+ *
+ * Copyright © 2016 W3C® (MIT, ERCIM, Keio, Beihang).
+ * W3C liability, trademark and document use rules apply.
+ */
+
+enum NavigationType {
+  "navigate",
+  "reload",
+  "back_forward",
+  "prerender"
+};
+
+interface PerformanceNavigationTiming : PerformanceResourceTiming {
+  readonly        attribute DOMHighResTimeStamp unloadEventStart;
+  readonly        attribute DOMHighResTimeStamp unloadEventEnd;
+  readonly        attribute DOMHighResTimeStamp domInteractive;
+  readonly        attribute DOMHighResTimeStamp domContentLoadedEventStart;
+  readonly        attribute DOMHighResTimeStamp domContentLoadedEventEnd;
+  readonly        attribute DOMHighResTimeStamp domComplete;
+  readonly        attribute DOMHighResTimeStamp loadEventStart;
+  readonly        attribute DOMHighResTimeStamp loadEventEnd;
+  readonly        attribute NavigationType      type;
+  readonly        attribute unsigned short      redirectCount;
+
+  jsonifier;
+};
diff --git a/dom/webidl/PerformanceTiming.webidl b/dom/webidl/PerformanceTiming.webidl
index e14201440..4aa403a50 100644
--- a/dom/webidl/PerformanceTiming.webidl
+++ b/dom/webidl/PerformanceTiming.webidl
@@ -33,5 +33,11 @@ interface PerformanceTiming {
   readonly attribute unsigned long long loadEventStart;
   readonly attribute unsigned long long loadEventEnd;
 
+  // This is a Chrome proprietary extension and not part of the
+  // performance/navigation timing specification.
+  // Returns 0 if a non-blank paint has not happened.
+  [Pref="dom.performance.time_to_non_blank_paint.enabled"]
+  readonly attribute unsigned long long timeToNonBlankPaint;
+
   jsonifier;
 };
diff --git a/dom/webidl/moz.build b/dom/webidl/moz.build
index 8682aee97..8469c9001 100644
--- a/dom/webidl/moz.build
+++ b/dom/webidl/moz.build
@@ -347,6 +347,7 @@ WEBIDL_FILES = [
     'PerformanceMark.webidl',
     'PerformanceMeasure.webidl',
     'PerformanceNavigation.webidl',
+    'PerformanceNavigationTiming.webidl',
     'PerformanceObserver.webidl',
     'PerformanceObserverEntryList.webidl',
     'PerformanceResourceTiming.webidl',
diff --git a/dom/workers/WorkerPrivate.cpp b/dom/workers/WorkerPrivate.cpp
index bd8a33032..8848e881a 100644
--- a/dom/workers/WorkerPrivate.cpp
+++ b/dom/workers/WorkerPrivate.cpp
@@ -2419,8 +2419,6 @@ WorkerPrivateParent<Derived>::WorkerPrivateParent(
     MOZ_ASSERT_IF(mIsChromeWorker, mIsSecureContext);
 
     MOZ_ASSERT(IsDedicatedWorker());
-    mNowBaseTimeStamp = aParent->NowBaseTimeStamp();
-    mNowBaseTimeHighRes = aParent->NowBaseTime();
 
     if (aParent->mParentFrozen) {
       Freeze(nullptr);
@@ -2451,18 +2449,6 @@ WorkerPrivateParent<Derived>::WorkerPrivateParent(
                  .creationOptions().setSecureContext(true);
     }
 
-    if (IsDedicatedWorker() && mLoadInfo.mWindow &&
-        mLoadInfo.mWindow->GetPerformance()) {
-      mNowBaseTimeStamp = mLoadInfo.mWindow->GetPerformance()->GetDOMTiming()->
-        GetNavigationStartTimeStamp();
-      mNowBaseTimeHighRes =
-      mLoadInfo.mWindow->GetPerformance()->GetDOMTiming()->
-        GetNavigationStartHighRes();
-    } else {
-      mNowBaseTimeStamp = CreationTimeStamp();
-      mNowBaseTimeHighRes = CreationTime();
-    }
-
     // Our parent can get suspended after it initiates the async creation
     // of a new worker thread.  In this case suspend the new worker as well.
     if (mLoadInfo.mWindow && mLoadInfo.mWindow->IsSuspended()) {
diff --git a/dom/workers/WorkerPrivate.h b/dom/workers/WorkerPrivate.h
index 465c0f9a3..28283bed7 100644
--- a/dom/workers/WorkerPrivate.h
+++ b/dom/workers/WorkerPrivate.h
@@ -216,8 +216,6 @@ private:
   WorkerType mWorkerType;
   TimeStamp mCreationTimeStamp;
   DOMHighResTimeStamp mCreationTimeHighRes;
-  TimeStamp mNowBaseTimeStamp;
-  DOMHighResTimeStamp mNowBaseTimeHighRes;
 
 protected:
   // The worker is owned by its thread, which is represented here.  This is set
@@ -579,14 +577,11 @@ public:
     return mCreationTimeHighRes;
   }
 
-  TimeStamp NowBaseTimeStamp() const
+  DOMHighResTimeStamp TimeStampToDOMHighRes(const TimeStamp& aTimeStamp) const
   {
-    return mNowBaseTimeStamp;
-  }
-
-  DOMHighResTimeStamp NowBaseTime() const
-  {
-    return mNowBaseTimeHighRes;
+    MOZ_ASSERT(!aTimeStamp.IsNull());
+    TimeDuration duration = aTimeStamp - mCreationTimeStamp;
+    return duration.ToMilliseconds();
   }
 
   nsIPrincipal*