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

src/x64/cpu-x64.cc

 // 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 23 matching lines @@
 #include "v8.h"
 
 #if defined(V8_TARGET_ARCH_X64)
 
 #include "cpu.h"
 #include "macro-assembler.h"
 
 namespace v8 {
 namespace internal {
 
-void CPU::Setup() {
+void CPU::SetUp() {
   CpuFeatures::Probe();
 }
 
 
 bool CPU::SupportsCrankshaft() {
   return true;  // Yay!
 }
 
 
 void CPU::FlushICache(void* start, size_t size) {
@@ skipping 25 matching lines @@
   // __asm { int 3 }
   __debugbreak();
 #else
   asm("int $3");
 #endif
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64