Report syntax errors in natives when building with mksnapshot.

include/v8.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 100 matching lines @@
 class StackFrame;
 class Isolate;
 
 namespace internal {
 
 class Arguments;
 class Object;
 class Heap;
 class HeapObject;
 class Isolate;
+class Serializer;
 }
 
 
 // --- Weak Handles ---
 
 
 /**
  * A weak reference callback function.
  *
  * This callback should either explicitly invoke Dispose on |object| if
@@ skipping 3204 matching lines @@
    * Creates a new try/catch block and registers it with v8.
    */
   TryCatch();
 
   /**
    * Unregisters and deletes this try/catch block.
    */
   ~TryCatch();
 
   /**
+   * Not for normal use.
+   */
+  TryCatch(const v8::internal::Serializer* serializer);
+
+  /**
    * Returns true if an exception has been caught by this try/catch block.
    */
   bool HasCaught() const;
 
   /**
    * For certain types of exceptions, it makes no sense to continue
    * execution.
    *
    * Currently, the only type of exception that can be caught by a
    * TryCatch handler and for which it does not make sense to continue
@@ skipping 1119 matching lines @@
 
 
 }  // namespace v8
 
 
 #undef V8EXPORT
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_