Fix presubmit errors caused by updated depot tools

src/v8threads.h

 // Copyright 2008 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 36 matching lines @@
   ThreadId id() { return id_; }
 
   // Should the thread be terminated when it is restored?
   bool terminate_on_restore() { return terminate_on_restore_; }
   void set_terminate_on_restore(bool terminate_on_restore) {
     terminate_on_restore_ = terminate_on_restore;
   }
 
   // Get data area for archiving a thread.
   char* data() { return data_; }
+
  private:
   explicit ThreadState(ThreadManager* thread_manager);
 
   void AllocateSpace();
 
   ThreadId id_;
   bool terminate_on_restore_;
   char* data_;
   ThreadState* next_;
   ThreadState* previous_;
@@ skipping 92 matching lines @@
   void Run();
 
   bool keep_going_;
   int sleep_ms_;
   Isolate* isolate_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_V8THREADS_H_