diff --git a/js/src/vm/Debugger.cpp b/js/src/vm/Debugger.cpp
index 357790e0a883..1a3d49d43ea2 100644
--- a/js/src/vm/Debugger.cpp
+++ b/js/src/vm/Debugger.cpp
@@ -450,11 +450,8 @@ Debugger::fromChildJSObject(JSObject *obj)
 }
 
 bool
-Debugger::getScriptFrameWithIter(JSContext *cx, AbstractFramePtr frame,
-                                 const ScriptFrameIter *maybeIter, MutableHandleValue vp)
+Debugger::getScriptFrame(JSContext *cx, AbstractFramePtr frame, MutableHandleValue vp)
 {
-    MOZ_ASSERT_IF(maybeIter, maybeIter->abstractFramePtr() == frame);
-
     FrameMap::AddPtr p = frames.lookupForAdd(frame);
     if (!p) {
         /* Create and populate the Debugger.Frame object. */
@@ -464,17 +461,7 @@ Debugger::getScriptFrameWithIter(JSContext *cx, AbstractFramePtr frame,
         if (!frameobj)
             return false;
 
-        // Eagerly copy ScriptFrameIter data if we've already walked the
-        // stack.
-        if (maybeIter) {
-            AbstractFramePtr data = maybeIter->copyDataAsAbstractFramePtr();
-            if (!data)
-                return false;
-            frameobj->setPrivate(data.raw());
-        } else {
-            frameobj->setPrivate(frame.raw());
-        }
-
+        frameobj->setPrivate(frame.raw());
         frameobj->setReservedSlot(JSSLOT_DEBUGFRAME_OWNER, ObjectValue(*object));
 
         if (!frames.add(p, frame, frameobj)) {
diff --git a/js/src/vm/Debugger.h b/js/src/vm/Debugger.h
index 6eb8fd4d93e8..83f89c6d8a3b 100644
--- a/js/src/vm/Debugger.h
+++ b/js/src/vm/Debugger.h
@@ -370,13 +370,6 @@ class Debugger : private mozilla::LinkedListElement<Debugger>
      */
     void fireNewScript(JSContext *cx, HandleScript script);
 
-    /*
-     * Gets a Debugger.Frame object. If maybeIter is non-null, we eagerly copy
-     * its data if we need to make a new Debugger.Frame.
-     */
-    bool getScriptFrameWithIter(JSContext *cx, AbstractFramePtr frame,
-                                const ScriptFrameIter *maybeIter, MutableHandleValue vp);
-
     inline Breakpoint *firstBreakpoint() const;
 
     static inline Debugger *fromOnNewGlobalObjectWatchersLink(JSCList *link);
@@ -490,9 +483,7 @@ class Debugger : private mozilla::LinkedListElement<Debugger>
      * Use this if you have already access to a frame pointer without having
      * to incur the cost of walking the stack.
      */
-    bool getScriptFrame(JSContext *cx, AbstractFramePtr frame, MutableHandleValue vp) {
-        return getScriptFrameWithIter(cx, frame, nullptr, vp);
-    }
+    bool getScriptFrame(JSContext *cx, AbstractFramePtr frame, MutableHandleValue vp);
 
     /*
      * Store the Debugger.Frame object for iter in *vp. Eagerly copies a
@@ -503,7 +494,11 @@ class Debugger : private mozilla::LinkedListElement<Debugger>
      * paid.
      */
     bool getScriptFrame(JSContext *cx, const ScriptFrameIter &iter, MutableHandleValue vp) {
-        return getScriptFrameWithIter(cx, iter.abstractFramePtr(), &iter, vp);
+        AbstractFramePtr data = iter.copyDataAsAbstractFramePtr();
+        if (!data || !getScriptFrame(cx, iter.abstractFramePtr(), vp))
+            return false;
+        vp.toObject().setPrivate(data.raw());
+        return true;
     }
 
     /*