Update V8 to r6387 as required by WebKit r76408

Change-Id: Icfc5385b0996bd592f8b1ac8cbb44767ee09f1f6
diff --git a/src/parser.h b/src/parser.h
index 1dfc153..0613a8d 100644
--- a/src/parser.h
+++ b/src/parser.h
@@ -430,6 +430,9 @@
   void ReportMessageAt(Scanner::Location loc,
                        const char* message,
                        Vector<const char*> args);
+  void ReportMessageAt(Scanner::Location loc,
+                       const char* message,
+                       Vector<Handle<String> > args);
 
  protected:
   FunctionLiteral* ParseLazy(Handle<SharedFunctionInfo> info,
@@ -682,6 +685,11 @@
   ScriptDataImpl* pre_data_;
   FuncNameInferrer* fni_;
   bool stack_overflow_;
+  // If true, the next (and immediately following) function literal is
+  // preceded by a parenthesis.
+  // Heuristically that means that the function will be called immediately,
+  // so never lazily compile it.
+  bool parenthesized_function_;
 };