Remove several JSFunction delegator functions.

src/debug/debug-frames.cc

Index: src/debug/debug-frames.cc
diff --git a/src/debug/debug-frames.cc b/src/debug/debug-frames.cc
index c4c288148c5c637d76011b30f5f4fc2f846c9248..ad54247417ddad2b36ca3b02bf578de783267f1f 100644
--- a/src/debug/debug-frames.cc
+++ b/src/debug/debug-frames.cc
@@ -206,7 +206,7 @@ int DebugFrameHelper::FindIndexedNonNativeFrame(JavaScriptFrameIterator* it,
     it->frame()->Summarize(&frames);
     for (int i = frames.length() - 1; i >= 0; i--) {
       // Omit functions from native and extension scripts.
-      if (!frames[i].function()->IsSubjectToDebugging()) continue;
+      if (!frames[i].function()->shared()->IsSubjectToDebugging()) continue;
       if (++count == index) return i;
     }
   }