Cosmetic changes ("set up" is a verb, "setup" is a noun).

src/debug.h

 // Copyright 2011 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 206 matching lines @@
 
 // This class contains the debugger support. The main purpose is to handle
 // setting break points in the code.
 //
 // This class controls the debug info for all functions which currently have
 // active breakpoints in them. This debug info is held in the heap root object
 // debug_info which is a FixedArray. Each entry in this list is of class
 // DebugInfo.
 class Debug {
  public:
-  void Setup(bool create_heap_objects);
+  void SetUp(bool create_heap_objects);
   bool Load();
   void Unload();
   bool IsLoaded() { return !debug_context_.is_null(); }
   bool InDebugger() { return thread_local_.debugger_entry_ != NULL; }
   void PreemptionWhileInDebugger();
   void Iterate(ObjectVisitor* v);
 
   Object* Break(Arguments args);
   void SetBreakPoint(Handle<SharedFunctionInfo> shared,
                      Handle<Object> break_point_object,
@@ skipping 743 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(MessageDispatchHelperThread);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 #endif  // V8_DEBUG_H_