Debug: support breakpoints set in the middle of statement

src/debug.h

 // 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
@@ skipping 72 matching lines @@
 // them.
 class BreakLocationIterator {
  public:
   explicit BreakLocationIterator(Handle<DebugInfo> debug_info,
                                  BreakLocatorType type);
   virtual ~BreakLocationIterator();
 
   void Next();
   void Next(int count);
   void FindBreakLocationFromAddress(Address pc);
-  void FindBreakLocationFromPosition(int position);
+  void FindBreakLocationFromPosition(int position, bool statement_alighned);
   void Reset();
   bool Done() const;
   void SetBreakPoint(Handle<Object> break_point_object);
   void ClearBreakPoint(Handle<Object> break_point_object);
   void SetOneShot();
   void ClearOneShot();
   void PrepareStepIn(Isolate* isolate);
   bool IsExit() const;
   bool HasBreakPoint();
   bool IsDebugBreak();
@@ skipping 129 matching lines @@
   bool InDebugger() { return thread_local_.debugger_entry_ != NULL; }
   void PreemptionWhileInDebugger();
   void Iterate(ObjectVisitor* v);
 
   Object* Break(Arguments args);
   void SetBreakPoint(Handle<JSFunction> function,
                      Handle<Object> break_point_object,
                      int* source_position);
   bool SetBreakPointForScript(Handle<Script> script,
                               Handle<Object> break_point_object,
-                              int* source_position);
+                              int* source_position,
+                              bool statement_alighned);
   void ClearBreakPoint(Handle<Object> break_point_object);
   void ClearAllBreakPoints();
   void FloodWithOneShot(Handle<JSFunction> function);
   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();
@@ skipping 795 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(MessageDispatchHelperThread);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 #endif  // V8_DEBUG_H_