Bug 1603187 - P3. Add Anonymize method. r=smaug

This method will be used by the DocumentLoadListener on the timing information object before sending it to the new content process following a cross-origin redirect.

Differential Revision: https://phabricator.services.mozilla.com/D57939

--HG--
extra : moz-landing-system : lando

dom/base/nsDOMNavigationTiming.cpp

@@ -61,6 +61,14 @@ void nsDOMNavigationTiming::Clear() {
   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;

dom/base/nsDOMNavigationTiming.h

@@ -174,6 +174,10 @@ class nsDOMNavigationTiming final : public mozilla::RelativeTimeline {
     return duration.ToMilliseconds();
   }
 
+  // Called by the DocumentLoadListener before sending the timing information
+  // to the new content process.
+  void Anonymize(nsIURI* aFinalURI);
+
  private:
   friend class nsDocShell;
   nsDOMNavigationTiming(nsDocShell* aDocShell, nsDOMNavigationTiming* aOther);