[debugger] account for inlined functions when stepping.

src/frames.h

Index: src/frames.h
diff --git a/src/frames.h b/src/frames.h
index 97b8f1b3919a7d9f36d4c0b2d27c4a9a1003449b..9b9964898c655cf4d87eedd159430c02de8cebf4 100644
--- a/src/frames.h
+++ b/src/frames.h
@@ -1029,6 +1029,8 @@ class JavaScriptFrame : public StandardFrame {
   // Return a list with {SharedFunctionInfo} objects of this frame.
   virtual void GetFunctions(List<SharedFunctionInfo*>* functions) const;
 
+  void GetFunctions(List<Handle<SharedFunctionInfo>>* functions) const;
+
   // Lookup exception handler for current {pc}, returns -1 if none found. Also
   // returns data associated with the handler site specific to the frame type:
   //  - OptimizedFrame  : Data is the stack slot count of the entire frame.