Enable stepping into callback passed to builtins (e.g. Array.forEach).

src/debug.h

-// Copyright 2011 the V8 project authors. All rights reserved.
+// Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
@@ skipping 226 matching lines @@
                      int* source_position);
   void ClearBreakPoint(Handle<Object> break_point_object);
   void ClearAllBreakPoints();
   void FloodWithOneShot(Handle<SharedFunctionInfo> shared);
   void FloodBoundFunctionWithOneShot(Handle<JSFunction> function);
   void FloodHandlerWithOneShot();
   void ChangeBreakOnException(ExceptionBreakType type, bool enable);
   bool IsBreakOnException(ExceptionBreakType type);
   void PrepareStep(StepAction step_action, int step_count);
   void ClearStepping();
+  void ClearStepOut();
+  bool IsStepping() { return thread_local_.step_count_ > 0; }
   bool StepNextContinue(BreakLocationIterator* break_location_iterator,
                         JavaScriptFrame* frame);
   static Handle<DebugInfo> GetDebugInfo(Handle<SharedFunctionInfo> shared);
   static bool HasDebugInfo(Handle<SharedFunctionInfo> shared);
 
   void PrepareForBreakPoints();
 
   // Returns whether the operation succeeded.
   bool EnsureDebugInfo(Handle<SharedFunctionInfo> shared);
 
@@ skipping 199 matching lines @@
 
  private:
   explicit Debug(Isolate* isolate);
   ~Debug();
 
   static bool CompileDebuggerScript(int index);
   void ClearOneShot();
   void ActivateStepIn(StackFrame* frame);
   void ClearStepIn();
   void ActivateStepOut(StackFrame* frame);
-  void ClearStepOut();
   void ClearStepNext();
   // Returns whether the compile succeeded.
   void RemoveDebugInfo(Handle<DebugInfo> debug_info);
   void SetAfterBreakTarget(JavaScriptFrame* frame);
   Handle<Object> CheckBreakPoints(Handle<Object> break_point);
   bool CheckBreakPoint(Handle<Object> break_point_object);
 
   // Global handle to debug context where all the debugger JavaScript code is
   // loaded.
   Handle<Context> debug_context_;
@@ skipping 506 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(MessageDispatchHelperThread);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 #endif  // V8_DEBUG_H_