1 files changed, 9 insertions, 20 deletions

diff --git a/dom/base/nsGlobalWindow.cpp b/dom/base/nsGlobalWindow.cpp
index 3d5c44a78..4ffccde9d 100644
--- a/dom/base/nsGlobalWindow.cpp
+++ b/dom/base/nsGlobalWindow.cpp
@@ -2521,8 +2521,13 @@ nsGlobalWindow::WouldReuseInnerWindow(nsIDocument* aNewDocument)
     return false;
   }
 
-  NS_ASSERTION(NS_IsAboutBlank(mDoc->GetDocumentURI()),
-               "How'd this happen?");
+#ifdef DEBUG
+{
+  nsCOMPtr<nsIURI> uri;
+  mDoc->GetDocumentURI()->CloneIgnoringRef(getter_AddRefs(uri));
+  NS_ASSERTION(NS_IsAboutBlank(uri), "How'd this happen?");
+}
+#endif
 
   // Great, we're the original document, check for one of the other
   // conditions.
@@ -3124,8 +3129,7 @@ nsGlobalWindow::SetNewDocument(nsIDocument* aDocument,
           newInnerWindow->mPerformance =
             Performance::CreateForMainThread(newInnerWindow->AsInner(),
                                              currentInner->mPerformance->GetDOMTiming(),
-                                             currentInner->mPerformance->GetChannel(),
-                                             currentInner->mPerformance->GetParentPerformance());
+                                             currentInner->mPerformance->GetChannel());
         }
       }
 
@@ -4339,22 +4343,7 @@ 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);
   }
 }