Cosmetic changes to tests to make it easier to concatenate them.

src/x64/cpu-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // CPU specific code for x64 independent of OS goes here.
 
 #if defined(__GNUC__) && !defined(__MINGW64__)
 #include "src/third_party/valgrind/valgrind.h"
 #endif
 
@@ skipping 21 matching lines @@
   // invalidate already cached translated code.  This leads to random
   // instability when code patches or moves are sometimes unnoticed.  One
   // solution is to run valgrind with --smc-check=all, but this comes at a big
   // performance cost.  We can notify valgrind to invalidate its cache.
 #ifdef VALGRIND_DISCARD_TRANSLATIONS
   unsigned res = VALGRIND_DISCARD_TRANSLATIONS(start, size);
   USE(res);
 #endif
 }
 
-} }  // namespace v8::internal
+}  // namespace internal
+}  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64