Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 659 insertions, 0 deletions

diff --git a/dom/base/nsDOMNavigationTiming.cpp b/dom/base/nsDOMNavigationTiming.cpp
new file mode 100644
index 0000000000..1db54e1ed7
--- /dev/null
+++ b/dom/base/nsDOMNavigationTiming.cpp
@@ -0,0 +1,659 @@
+/* -*- 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 "nsDOMNavigationTiming.h"
+
+#include "GeckoProfiler.h"
+#include "ipc/IPCMessageUtilsSpecializations.h"
+#include "mozilla/ProfilerMarkers.h"
+#include "mozilla/Telemetry.h"
+#include "mozilla/TimeStamp.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/PerformanceNavigation.h"
+#include "mozilla/ipc/IPDLParamTraits.h"
+#include "mozilla/ipc/URIUtils.h"
+#include "nsCOMPtr.h"
+#include "nsContentUtils.h"
+#include "nsDocShell.h"
+#include "nsHttp.h"
+#include "nsIScriptSecurityManager.h"
+#include "nsIURI.h"
+#include "nsPrintfCString.h"
+#include "prtime.h"
+
+using namespace mozilla;
+
+namespace mozilla {
+
+LazyLogModule gPageLoadLog("PageLoad");
+#define PAGELOAD_LOG(args) MOZ_LOG(gPageLoadLog, LogLevel::Debug, args)
+#define PAGELOAD_LOG_ENABLED() MOZ_LOG_TEST(gPageLoadLog, LogLevel::Error)
+
+}  // namespace mozilla
+
+nsDOMNavigationTiming::nsDOMNavigationTiming(nsDocShell* aDocShell) {
+  Clear();
+
+  mDocShell = aDocShell;
+}
+
+nsDOMNavigationTiming::~nsDOMNavigationTiming() = default;
+
+void nsDOMNavigationTiming::Clear() {
+  mNavigationType = TYPE_RESERVED;
+  mNavigationStartHighRes = 0;
+
+  mBeforeUnloadStart = TimeStamp();
+  mUnloadStart = TimeStamp();
+  mUnloadEnd = TimeStamp();
+  mLoadEventStart = TimeStamp();
+  mLoadEventEnd = TimeStamp();
+  mDOMLoading = TimeStamp();
+  mDOMInteractive = TimeStamp();
+  mDOMContentLoadedEventStart = TimeStamp();
+  mDOMContentLoadedEventEnd = TimeStamp();
+  mDOMComplete = TimeStamp();
+  mContentfulComposite = TimeStamp();
+  mNonBlankPaint = TimeStamp();
+
+  mDocShellHasBeenActiveSinceNavigationStart = false;
+}
+
+void nsDOMNavigationTiming::Anonymize(nsIURI* aFinalURI) {
+  mLoadedURI = aFinalURI;
+  mUnloadedURI = nullptr;
+  mBeforeUnloadStart = TimeStamp();
+  mUnloadStart = TimeStamp();
+  mUnloadEnd = TimeStamp();
+}
+
+DOMTimeMilliSec nsDOMNavigationTiming::TimeStampToDOM(TimeStamp aStamp) const {
+  if (aStamp.IsNull()) {
+    return 0;
+  }
+
+  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;
+  mNavigationStart = TimeStamp::Now();
+  mDocShellHasBeenActiveSinceNavigationStart =
+      (aDocShellState == DocShellState::eActive);
+  PROFILER_MARKER_UNTYPED("Navigation::Start", DOM,
+                          MarkerInnerWindowIdFromDocShell(mDocShell));
+}
+
+void nsDOMNavigationTiming::NotifyFetchStart(nsIURI* aURI,
+                                             Type aNavigationType) {
+  mNavigationType = aNavigationType;
+  // At the unload event time we don't really know the loading uri.
+  // Need it for later check for unload timing access.
+  mLoadedURI = aURI;
+}
+
+void nsDOMNavigationTiming::NotifyRestoreStart() {
+  mNavigationType = TYPE_BACK_FORWARD;
+}
+
+void nsDOMNavigationTiming::NotifyBeforeUnload() {
+  mBeforeUnloadStart = TimeStamp::Now();
+}
+
+void nsDOMNavigationTiming::NotifyUnloadAccepted(nsIURI* aOldURI) {
+  mUnloadStart = mBeforeUnloadStart;
+  mUnloadedURI = aOldURI;
+}
+
+void nsDOMNavigationTiming::NotifyUnloadEventStart() {
+  mUnloadStart = TimeStamp::Now();
+  PROFILER_MARKER("Unload", NETWORK,
+                  MarkerOptions(MarkerTiming::IntervalStart(),
+                                MarkerInnerWindowIdFromDocShell(mDocShell)),
+                  Tracing, "Navigation");
+}
+
+void nsDOMNavigationTiming::NotifyUnloadEventEnd() {
+  mUnloadEnd = TimeStamp::Now();
+  PROFILER_MARKER("Unload", NETWORK,
+                  MarkerOptions(MarkerTiming::IntervalEnd(),
+                                MarkerInnerWindowIdFromDocShell(mDocShell)),
+                  Tracing, "Navigation");
+}
+
+void nsDOMNavigationTiming::NotifyLoadEventStart() {
+  if (!mLoadEventStart.IsNull()) {
+    return;
+  }
+  mLoadEventStart = TimeStamp::Now();
+
+  PROFILER_MARKER("Load", NETWORK,
+                  MarkerOptions(MarkerTiming::IntervalStart(),
+                                MarkerInnerWindowIdFromDocShell(mDocShell)),
+                  Tracing, "Navigation");
+
+  if (IsTopLevelContentDocumentInContentProcess()) {
+    TimeStamp now = TimeStamp::Now();
+
+    Telemetry::AccumulateTimeDelta(Telemetry::TIME_TO_LOAD_EVENT_START_MS,
+                                   mNavigationStart, now);
+
+    if (mDocShellHasBeenActiveSinceNavigationStart) {
+      if (net::nsHttp::IsBeforeLastActiveTabLoadOptimization(
+              mNavigationStart)) {
+        Telemetry::AccumulateTimeDelta(
+            Telemetry::TIME_TO_LOAD_EVENT_START_ACTIVE_NETOPT_MS,
+            mNavigationStart, now);
+      } else {
+        Telemetry::AccumulateTimeDelta(
+            Telemetry::TIME_TO_LOAD_EVENT_START_ACTIVE_MS, mNavigationStart,
+            now);
+      }
+    }
+  }
+}
+
+void nsDOMNavigationTiming::NotifyLoadEventEnd() {
+  if (!mLoadEventEnd.IsNull()) {
+    return;
+  }
+  mLoadEventEnd = TimeStamp::Now();
+
+  PROFILER_MARKER("Load", NETWORK,
+                  MarkerOptions(MarkerTiming::IntervalEnd(),
+                                MarkerInnerWindowIdFromDocShell(mDocShell)),
+                  Tracing, "Navigation");
+
+  if (IsTopLevelContentDocumentInContentProcess()) {
+    if (profiler_thread_is_being_profiled_for_markers() ||
+        PAGELOAD_LOG_ENABLED()) {
+      TimeDuration elapsed = mLoadEventEnd - mNavigationStart;
+      TimeDuration duration = mLoadEventEnd - mLoadEventStart;
+      nsPrintfCString marker(
+          "Document %s loaded after %dms, load event duration %dms",
+          nsContentUtils::TruncatedURLForDisplay(mLoadedURI).get(),
+          int(elapsed.ToMilliseconds()), int(duration.ToMilliseconds()));
+      PAGELOAD_LOG(("%s", marker.get()));
+      PROFILER_MARKER_TEXT(
+          "DocumentLoad", DOM,
+          MarkerOptions(MarkerTiming::Interval(mNavigationStart, mLoadEventEnd),
+                        MarkerInnerWindowIdFromDocShell(mDocShell)),
+          marker);
+    }
+    Telemetry::AccumulateTimeDelta(Telemetry::TIME_TO_LOAD_EVENT_END_MS,
+                                   mNavigationStart);
+  }
+}
+
+void nsDOMNavigationTiming::SetDOMLoadingTimeStamp(nsIURI* aURI,
+                                                   TimeStamp aValue) {
+  if (!mDOMLoading.IsNull()) {
+    return;
+  }
+  mLoadedURI = aURI;
+  mDOMLoading = aValue;
+}
+
+void nsDOMNavigationTiming::NotifyDOMLoading(nsIURI* aURI) {
+  if (!mDOMLoading.IsNull()) {
+    return;
+  }
+  mLoadedURI = aURI;
+  mDOMLoading = TimeStamp::Now();
+
+  PROFILER_MARKER_UNTYPED("Navigation::DOMLoading", DOM,
+                          MarkerInnerWindowIdFromDocShell(mDocShell));
+}
+
+void nsDOMNavigationTiming::NotifyDOMInteractive(nsIURI* aURI) {
+  if (!mDOMInteractive.IsNull()) {
+    return;
+  }
+  mLoadedURI = aURI;
+  mDOMInteractive = TimeStamp::Now();
+
+  PROFILER_MARKER_UNTYPED("Navigation::DOMInteractive", DOM,
+                          MarkerInnerWindowIdFromDocShell(mDocShell));
+}
+
+void nsDOMNavigationTiming::NotifyDOMComplete(nsIURI* aURI) {
+  if (!mDOMComplete.IsNull()) {
+    return;
+  }
+  mLoadedURI = aURI;
+  mDOMComplete = TimeStamp::Now();
+
+  PROFILER_MARKER_UNTYPED("Navigation::DOMComplete", DOM,
+                          MarkerInnerWindowIdFromDocShell(mDocShell));
+}
+
+void nsDOMNavigationTiming::NotifyDOMContentLoadedStart(nsIURI* aURI) {
+  if (!mDOMContentLoadedEventStart.IsNull()) {
+    return;
+  }
+
+  mLoadedURI = aURI;
+  mDOMContentLoadedEventStart = TimeStamp::Now();
+
+  PROFILER_MARKER("DOMContentLoaded", NETWORK,
+                  MarkerOptions(MarkerTiming::IntervalStart(),
+                                MarkerInnerWindowIdFromDocShell(mDocShell)),
+                  Tracing, "Navigation");
+
+  if (IsTopLevelContentDocumentInContentProcess()) {
+    TimeStamp now = TimeStamp::Now();
+
+    Telemetry::AccumulateTimeDelta(
+        Telemetry::TIME_TO_DOM_CONTENT_LOADED_START_MS, mNavigationStart, now);
+
+    if (mDocShellHasBeenActiveSinceNavigationStart) {
+      if (net::nsHttp::IsBeforeLastActiveTabLoadOptimization(
+              mNavigationStart)) {
+        Telemetry::AccumulateTimeDelta(
+            Telemetry::TIME_TO_DOM_CONTENT_LOADED_START_ACTIVE_NETOPT_MS,
+            mNavigationStart, now);
+      } else {
+        Telemetry::AccumulateTimeDelta(
+            Telemetry::TIME_TO_DOM_CONTENT_LOADED_START_ACTIVE_MS,
+            mNavigationStart, now);
+      }
+    }
+  }
+}
+
+void nsDOMNavigationTiming::NotifyDOMContentLoadedEnd(nsIURI* aURI) {
+  if (!mDOMContentLoadedEventEnd.IsNull()) {
+    return;
+  }
+
+  mLoadedURI = aURI;
+  mDOMContentLoadedEventEnd = TimeStamp::Now();
+
+  PROFILER_MARKER("DOMContentLoaded", NETWORK,
+                  MarkerOptions(MarkerTiming::IntervalEnd(),
+                                MarkerInnerWindowIdFromDocShell(mDocShell)),
+                  Tracing, "Navigation");
+
+  if (IsTopLevelContentDocumentInContentProcess()) {
+    Telemetry::AccumulateTimeDelta(Telemetry::TIME_TO_DOM_CONTENT_LOADED_END_MS,
+                                   mNavigationStart);
+  }
+}
+
+// static
+void nsDOMNavigationTiming::TTITimeoutCallback(nsITimer* aTimer,
+                                               void* aClosure) {
+  nsDOMNavigationTiming* self = static_cast<nsDOMNavigationTiming*>(aClosure);
+  self->TTITimeout(aTimer);
+}
+
+#define TTI_WINDOW_SIZE_MS (5 * 1000)
+
+void nsDOMNavigationTiming::TTITimeout(nsITimer* aTimer) {
+  // Check TTI: see if it's been 5 seconds since the last Long Task
+  TimeStamp now = TimeStamp::Now();
+  MOZ_RELEASE_ASSERT(!mContentfulComposite.IsNull(),
+                     "TTI timeout with no contentful-composite?");
+
+  nsCOMPtr<nsIThread> mainThread = do_GetMainThread();
+  TimeStamp lastLongTaskEnded;
+  mainThread->GetLastLongNonIdleTaskEnd(&lastLongTaskEnded);
+  // Window starts at mContentfulComposite; any long task before that is ignored
+  if (lastLongTaskEnded.IsNull() || lastLongTaskEnded < mContentfulComposite) {
+    PAGELOAD_LOG(
+        ("no longtask (last was %g ms before ContentfulComposite)",
+         lastLongTaskEnded.IsNull()
+             ? 0
+             : (mContentfulComposite - lastLongTaskEnded).ToMilliseconds()));
+    lastLongTaskEnded = mContentfulComposite;
+  }
+  TimeDuration delta = now - lastLongTaskEnded;
+  PAGELOAD_LOG(("TTI delta: %g ms", delta.ToMilliseconds()));
+  if (delta.ToMilliseconds() < TTI_WINDOW_SIZE_MS) {
+    // Less than 5 seconds since the last long task or start of the window.
+    // Schedule another check.
+    PAGELOAD_LOG(("TTI: waiting additional %g ms",
+                  (TTI_WINDOW_SIZE_MS + 100) - delta.ToMilliseconds()));
+    aTimer->InitWithNamedFuncCallback(
+        TTITimeoutCallback, this,
+        (TTI_WINDOW_SIZE_MS + 100) -
+            delta.ToMilliseconds(),  // slightly after the window ends
+        nsITimer::TYPE_ONE_SHOT_LOW_PRIORITY,
+        "nsDOMNavigationTiming::TTITimeout");
+    return;
+  }
+
+  // To correctly implement TTI/TTFI as proposed, we'd need to not
+  // fire it until there are no more than 2 network loads.  By the
+  // proposed definition, without that we're closer to
+  // TimeToFirstInteractive.  There are also arguments about what sort
+  // of loads should qualify.
+
+  // XXX check number of network loads, and if > 2 mark to check if loads
+  // decreases to 2 (or record that point and let the normal timer here
+  // handle it)
+
+  // TTI has occurred!  TTI is either FCP (if there are no longtasks and no
+  // DCLEnd in the window that starts at FCP), or at the end of the last
+  // Long Task or DOMContentLoadedEnd (whichever is later). lastLongTaskEnded
+  // is >= FCP here.
+
+  if (mTTFI.IsNull()) {
+    // lastLongTaskEnded is >= mContentfulComposite
+    mTTFI = (mDOMContentLoadedEventEnd.IsNull() ||
+             lastLongTaskEnded > mDOMContentLoadedEventEnd)
+                ? lastLongTaskEnded
+                : mDOMContentLoadedEventEnd;
+    PAGELOAD_LOG(
+        ("TTFI after %dms (LongTask was at %dms, DCL was %dms)",
+         int((mTTFI - mNavigationStart).ToMilliseconds()),
+         lastLongTaskEnded.IsNull()
+             ? 0
+             : int((lastLongTaskEnded - mNavigationStart).ToMilliseconds()),
+         mDOMContentLoadedEventEnd.IsNull()
+             ? 0
+             : int((mDOMContentLoadedEventEnd - mNavigationStart)
+                       .ToMilliseconds())));
+  }
+  // XXX Implement TTI via check number of network loads, and if > 2 mark
+  // to check if loads decreases to 2 (or record that point and let the
+  // normal timer here handle it)
+
+  mTTITimer = nullptr;
+
+  if (profiler_thread_is_being_profiled_for_markers() ||
+      PAGELOAD_LOG_ENABLED()) {
+    TimeDuration elapsed = mTTFI - mNavigationStart;
+    MOZ_ASSERT(elapsed.ToMilliseconds() > 0);
+    TimeDuration elapsedLongTask =
+        lastLongTaskEnded.IsNull() ? 0 : lastLongTaskEnded - mNavigationStart;
+    nsPrintfCString marker(
+        "TTFI after %dms (LongTask was at %dms) for URL %s",
+        int(elapsed.ToMilliseconds()), int(elapsedLongTask.ToMilliseconds()),
+        nsContentUtils::TruncatedURLForDisplay(mLoadedURI).get());
+
+    PROFILER_MARKER_TEXT(
+        "TimeToFirstInteractive (TTFI)", DOM,
+        MarkerOptions(MarkerTiming::Interval(mNavigationStart, mTTFI),
+                      MarkerInnerWindowIdFromDocShell(mDocShell)),
+        marker);
+  }
+}
+
+void nsDOMNavigationTiming::NotifyNonBlankPaintForRootContentDocument() {
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(!mNavigationStart.IsNull());
+
+  if (!mNonBlankPaint.IsNull()) {
+    return;
+  }
+
+  mNonBlankPaint = TimeStamp::Now();
+
+  if (profiler_thread_is_being_profiled_for_markers() ||
+      PAGELOAD_LOG_ENABLED()) {
+    TimeDuration elapsed = mNonBlankPaint - mNavigationStart;
+    nsPrintfCString marker(
+        "Non-blank paint after %dms for URL %s, %s",
+        int(elapsed.ToMilliseconds()),
+        nsContentUtils::TruncatedURLForDisplay(mLoadedURI).get(),
+        mDocShellHasBeenActiveSinceNavigationStart
+            ? "foreground tab"
+            : "this tab was inactive some of the time between navigation start "
+              "and first non-blank paint");
+    PAGELOAD_LOG(("%s", marker.get()));
+    PROFILER_MARKER_TEXT(
+        "FirstNonBlankPaint", DOM,
+        MarkerOptions(MarkerTiming::Interval(mNavigationStart, mNonBlankPaint),
+                      MarkerInnerWindowIdFromDocShell(mDocShell)),
+        marker);
+  }
+
+  if (mDocShellHasBeenActiveSinceNavigationStart) {
+    if (net::nsHttp::IsBeforeLastActiveTabLoadOptimization(mNavigationStart)) {
+      Telemetry::AccumulateTimeDelta(
+          Telemetry::TIME_TO_NON_BLANK_PAINT_NETOPT_MS, mNavigationStart,
+          mNonBlankPaint);
+    } else {
+      Telemetry::AccumulateTimeDelta(
+          Telemetry::TIME_TO_NON_BLANK_PAINT_NO_NETOPT_MS, mNavigationStart,
+          mNonBlankPaint);
+    }
+
+    Telemetry::AccumulateTimeDelta(Telemetry::TIME_TO_NON_BLANK_PAINT_MS,
+                                   mNavigationStart, mNonBlankPaint);
+  }
+}
+
+void nsDOMNavigationTiming::NotifyContentfulCompositeForRootContentDocument(
+    const mozilla::TimeStamp& aCompositeEndTime) {
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(!mNavigationStart.IsNull());
+
+  if (!mContentfulComposite.IsNull()) {
+    return;
+  }
+
+  mContentfulComposite = aCompositeEndTime;
+
+  if (profiler_thread_is_being_profiled_for_markers() ||
+      PAGELOAD_LOG_ENABLED()) {
+    TimeDuration elapsed = mContentfulComposite - mNavigationStart;
+    nsPrintfCString marker(
+        "Contentful composite after %dms for URL %s, %s",
+        int(elapsed.ToMilliseconds()),
+        nsContentUtils::TruncatedURLForDisplay(mLoadedURI).get(),
+        mDocShellHasBeenActiveSinceNavigationStart
+            ? "foreground tab"
+            : "this tab was inactive some of the time between navigation start "
+              "and first non-blank paint");
+    PAGELOAD_LOG(("%s", marker.get()));
+    PROFILER_MARKER_TEXT(
+        "FirstContentfulComposite", DOM,
+        MarkerOptions(
+            MarkerTiming::Interval(mNavigationStart, mContentfulComposite),
+            MarkerInnerWindowIdFromDocShell(mDocShell)),
+        marker);
+  }
+
+  if (!mTTITimer) {
+    mTTITimer = NS_NewTimer();
+  }
+
+  // TTI is first checked 5 seconds after the FCP (non-blank-paint is very close
+  // to FCP).
+  mTTITimer->InitWithNamedFuncCallback(TTITimeoutCallback, this,
+                                       TTI_WINDOW_SIZE_MS,
+                                       nsITimer::TYPE_ONE_SHOT_LOW_PRIORITY,
+                                       "nsDOMNavigationTiming::TTITimeout");
+
+  if (mDocShellHasBeenActiveSinceNavigationStart) {
+    Telemetry::AccumulateTimeDelta(Telemetry::TIME_TO_FIRST_CONTENTFUL_PAINT_MS,
+                                   mNavigationStart, mContentfulComposite);
+  }
+}
+
+void nsDOMNavigationTiming::NotifyDOMContentFlushedForRootContentDocument() {
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(!mNavigationStart.IsNull());
+
+  if (!mDOMContentFlushed.IsNull()) {
+    return;
+  }
+
+  mDOMContentFlushed = TimeStamp::Now();
+
+  if (profiler_thread_is_being_profiled_for_markers() ||
+      PAGELOAD_LOG_ENABLED()) {
+    TimeDuration elapsed = mDOMContentFlushed - mNavigationStart;
+    nsPrintfCString marker(
+        "DOMContentFlushed after %dms for URL %s, %s",
+        int(elapsed.ToMilliseconds()),
+        nsContentUtils::TruncatedURLForDisplay(mLoadedURI).get(),
+        mDocShellHasBeenActiveSinceNavigationStart
+            ? "foreground tab"
+            : "this tab was inactive some of the time between navigation start "
+              "and DOMContentFlushed");
+    PAGELOAD_LOG(("%s", marker.get()));
+    PROFILER_MARKER_TEXT(
+        "DOMContentFlushed", DOM,
+        MarkerOptions(
+            MarkerTiming::Interval(mNavigationStart, mDOMContentFlushed),
+            MarkerInnerWindowIdFromDocShell(mDocShell)),
+        marker);
+  }
+}
+
+void nsDOMNavigationTiming::NotifyDocShellStateChanged(
+    DocShellState aDocShellState) {
+  mDocShellHasBeenActiveSinceNavigationStart &=
+      (aDocShellState == DocShellState::eActive);
+}
+
+mozilla::TimeStamp nsDOMNavigationTiming::GetUnloadEventStartTimeStamp() const {
+  nsIScriptSecurityManager* ssm = nsContentUtils::GetSecurityManager();
+  // todo: if you intend to update CheckSameOriginURI to log the error to the
+  // console you also need to update the 'aFromPrivateWindow' argument.
+  nsresult rv = ssm->CheckSameOriginURI(mLoadedURI, mUnloadedURI, false, false);
+  if (NS_SUCCEEDED(rv)) {
+    return mUnloadStart;
+  }
+  return mozilla::TimeStamp();
+}
+
+mozilla::TimeStamp nsDOMNavigationTiming::GetUnloadEventEndTimeStamp() const {
+  nsIScriptSecurityManager* ssm = nsContentUtils::GetSecurityManager();
+  // todo: if you intend to update CheckSameOriginURI to log the error to the
+  // console you also need to update the 'aFromPrivateWindow' argument.
+  nsresult rv = ssm->CheckSameOriginURI(mLoadedURI, mUnloadedURI, false, false);
+  if (NS_SUCCEEDED(rv)) {
+    return mUnloadEnd;
+  }
+  return mozilla::TimeStamp();
+}
+
+bool nsDOMNavigationTiming::IsTopLevelContentDocumentInContentProcess() const {
+  if (!mDocShell) {
+    return false;
+  }
+  if (!XRE_IsContentProcess()) {
+    return false;
+  }
+  return mDocShell->GetBrowsingContext()->IsTopContent();
+}
+
+nsDOMNavigationTiming::nsDOMNavigationTiming(nsDocShell* aDocShell,
+                                             nsDOMNavigationTiming* aOther)
+    : mDocShell(aDocShell),
+      mUnloadedURI(aOther->mUnloadedURI),
+      mLoadedURI(aOther->mLoadedURI),
+      mNavigationType(aOther->mNavigationType),
+      mNavigationStartHighRes(aOther->mNavigationStartHighRes),
+      mNavigationStart(aOther->mNavigationStart),
+      mNonBlankPaint(aOther->mNonBlankPaint),
+      mContentfulComposite(aOther->mContentfulComposite),
+      mDOMContentFlushed(aOther->mDOMContentFlushed),
+      mBeforeUnloadStart(aOther->mBeforeUnloadStart),
+      mUnloadStart(aOther->mUnloadStart),
+      mUnloadEnd(aOther->mUnloadEnd),
+      mLoadEventStart(aOther->mLoadEventStart),
+      mLoadEventEnd(aOther->mLoadEventEnd),
+      mDOMLoading(aOther->mDOMLoading),
+      mDOMInteractive(aOther->mDOMInteractive),
+      mDOMContentLoadedEventStart(aOther->mDOMContentLoadedEventStart),
+      mDOMContentLoadedEventEnd(aOther->mDOMContentLoadedEventEnd),
+      mDOMComplete(aOther->mDOMComplete),
+      mTTFI(aOther->mTTFI),
+      mDocShellHasBeenActiveSinceNavigationStart(
+          aOther->mDocShellHasBeenActiveSinceNavigationStart) {}
+
+/* static */
+void mozilla::ipc::IPDLParamTraits<nsDOMNavigationTiming*>::Write(
+    IPC::MessageWriter* aWriter, IProtocol* aActor,
+    nsDOMNavigationTiming* aParam) {
+  bool isNull = !aParam;
+  WriteIPDLParam(aWriter, aActor, isNull);
+  if (isNull) {
+    return;
+  }
+
+  RefPtr<nsIURI> unloadedURI = aParam->mUnloadedURI.get();
+  RefPtr<nsIURI> loadedURI = aParam->mLoadedURI.get();
+  WriteIPDLParam(aWriter, aActor, unloadedURI ? Some(unloadedURI) : Nothing());
+  WriteIPDLParam(aWriter, aActor, loadedURI ? Some(loadedURI) : Nothing());
+  WriteIPDLParam(aWriter, aActor, uint32_t(aParam->mNavigationType));
+  WriteIPDLParam(aWriter, aActor, aParam->mNavigationStartHighRes);
+  WriteIPDLParam(aWriter, aActor, aParam->mNavigationStart);
+  WriteIPDLParam(aWriter, aActor, aParam->mNonBlankPaint);
+  WriteIPDLParam(aWriter, aActor, aParam->mContentfulComposite);
+  WriteIPDLParam(aWriter, aActor, aParam->mDOMContentFlushed);
+  WriteIPDLParam(aWriter, aActor, aParam->mBeforeUnloadStart);
+  WriteIPDLParam(aWriter, aActor, aParam->mUnloadStart);
+  WriteIPDLParam(aWriter, aActor, aParam->mUnloadEnd);
+  WriteIPDLParam(aWriter, aActor, aParam->mLoadEventStart);
+  WriteIPDLParam(aWriter, aActor, aParam->mLoadEventEnd);
+  WriteIPDLParam(aWriter, aActor, aParam->mDOMLoading);
+  WriteIPDLParam(aWriter, aActor, aParam->mDOMInteractive);
+  WriteIPDLParam(aWriter, aActor, aParam->mDOMContentLoadedEventStart);
+  WriteIPDLParam(aWriter, aActor, aParam->mDOMContentLoadedEventEnd);
+  WriteIPDLParam(aWriter, aActor, aParam->mDOMComplete);
+  WriteIPDLParam(aWriter, aActor, aParam->mTTFI);
+  WriteIPDLParam(aWriter, aActor,
+                 aParam->mDocShellHasBeenActiveSinceNavigationStart);
+}
+
+/* static */
+bool mozilla::ipc::IPDLParamTraits<nsDOMNavigationTiming*>::Read(
+    IPC::MessageReader* aReader, IProtocol* aActor,
+    RefPtr<nsDOMNavigationTiming>* aResult) {
+  bool isNull;
+  if (!ReadIPDLParam(aReader, aActor, &isNull)) {
+    return false;
+  }
+  if (isNull) {
+    *aResult = nullptr;
+    return true;
+  }
+
+  auto timing = MakeRefPtr<nsDOMNavigationTiming>(nullptr);
+  uint32_t type;
+  Maybe<RefPtr<nsIURI>> unloadedURI;
+  Maybe<RefPtr<nsIURI>> loadedURI;
+  if (!ReadIPDLParam(aReader, aActor, &unloadedURI) ||
+      !ReadIPDLParam(aReader, aActor, &loadedURI) ||
+      !ReadIPDLParam(aReader, aActor, &type) ||
+      !ReadIPDLParam(aReader, aActor, &timing->mNavigationStartHighRes) ||
+      !ReadIPDLParam(aReader, aActor, &timing->mNavigationStart) ||
+      !ReadIPDLParam(aReader, aActor, &timing->mNonBlankPaint) ||
+      !ReadIPDLParam(aReader, aActor, &timing->mContentfulComposite) ||
+      !ReadIPDLParam(aReader, aActor, &timing->mDOMContentFlushed) ||
+      !ReadIPDLParam(aReader, aActor, &timing->mBeforeUnloadStart) ||
+      !ReadIPDLParam(aReader, aActor, &timing->mUnloadStart) ||
+      !ReadIPDLParam(aReader, aActor, &timing->mUnloadEnd) ||
+      !ReadIPDLParam(aReader, aActor, &timing->mLoadEventStart) ||
+      !ReadIPDLParam(aReader, aActor, &timing->mLoadEventEnd) ||
+      !ReadIPDLParam(aReader, aActor, &timing->mDOMLoading) ||
+      !ReadIPDLParam(aReader, aActor, &timing->mDOMInteractive) ||
+      !ReadIPDLParam(aReader, aActor, &timing->mDOMContentLoadedEventStart) ||
+      !ReadIPDLParam(aReader, aActor, &timing->mDOMContentLoadedEventEnd) ||
+      !ReadIPDLParam(aReader, aActor, &timing->mDOMComplete) ||
+      !ReadIPDLParam(aReader, aActor, &timing->mTTFI) ||
+      !ReadIPDLParam(aReader, aActor,
+                     &timing->mDocShellHasBeenActiveSinceNavigationStart)) {
+    return false;
+  }
+  timing->mNavigationType = nsDOMNavigationTiming::Type(type);
+  if (unloadedURI) {
+    timing->mUnloadedURI = std::move(*unloadedURI);
+  }
+  if (loadedURI) {
+    timing->mLoadedURI = std::move(*loadedURI);
+  }
+  *aResult = std::move(timing);
+  return true;
+}