Update V8 to r4730 as required by WebKit r60469
diff --git a/src/parser.h b/src/parser.h
index 2e5daf9..89966a6 100644
--- a/src/parser.h
+++ b/src/parser.h
@@ -90,7 +90,7 @@
         last_entry_(0) { }
   virtual ~ScriptDataImpl();
   virtual int Length();
-  virtual unsigned* Data();
+  virtual const char* Data();
   virtual bool HasError();
   FunctionEntry GetFunctionEnd(int start);
   bool SanityCheck();