Basic implementation of liveedit feature

src/liveedit.h

 // Copyright 2010 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 55 matching lines @@
 class LiveEditFunctionTracker {
  public:
   explicit LiveEditFunctionTracker(FunctionLiteral* fun);
   ~LiveEditFunctionTracker();
   void RecordFunctionCode(Handle<Code> code);
   void RecordFunctionScope(Scope* scope);
 
   static bool IsActive();
 };
 
+#ifdef ENABLE_DEBUGGER_SUPPORT
+
+class LiveEdit : AllStatic {
+ public:
+  static JSArray* GatherCompileInfo(Handle<Script> script,
+                                    Handle<String> source);
+
+  static void WrapSharedFunctionInfos(Handle<JSArray> array);
+
+  static void ReplaceFunctionCode(Handle<JSArray> new_compile_info_array,
+                                  Handle<JSArray> shared_info_array);
+
+  static void RelinkFunctionToScript(Handle<JSArray> shared_info_array,
+                                     Handle<Script> script_handle);
+
+  static void PatchFunctionPositions(Handle<JSArray> shared_info_array,
+                                     Handle<JSArray> position_change_array);
+};
+
+#endif  // ENABLE_DEBUGGER_SUPPORT
+
+
 } }  // namespace v8::internal
 
 #endif /* V*_LIVEEDIT_H_ */