FrameView can be null in addTextMatchMaker() after appendChild(iframe)

third_party/WebKit/Source/core/testing/Internals.cpp

Index: third_party/WebKit/Source/core/testing/Internals.cpp
diff --git a/third_party/WebKit/Source/core/testing/Internals.cpp b/third_party/WebKit/Source/core/testing/Internals.cpp
index c13b7b919ecaf60e10933212f232a8481f64116a..f936f4298b2333945f2f2bcbe047ea37128e61c6 100644
--- a/third_party/WebKit/Source/core/testing/Internals.cpp
+++ b/third_party/WebKit/Source/core/testing/Internals.cpp
@@ -1041,6 +1041,9 @@ String Internals::markerDescriptionForNode(Node* node,
 
 void Internals::addTextMatchMarker(const Range* range, bool isActive) {
   DCHECK(range);
+  if (!range->ownerDocument().view())
+    return;
+
   range->ownerDocument().updateStyleAndLayoutIgnorePendingStylesheets();
   range->ownerDocument().markers().addTextMatchMarker(EphemeralRange(range),
                                                       isActive);