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

src/x64/interface-descriptors-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.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/interface-descriptors.h"
 
@@ skipping 371 matching lines @@
       rdi,  // math rounding function
       rdx,  // vector slot id
   };
   Representation representations[] = {
       Representation::Tagged(),  //
       Representation::Tagged(),  //
       Representation::Tagged(),  //
   };
   data->Initialize(arraysize(registers), registers, representations);
 }
-}
-}  // namespace v8::internal
+}  // namespace internal
+}  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64