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

src/hydrogen-mark-unreachable.cc

 // Copyright 2013 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/hydrogen-mark-unreachable.h"
 
 namespace v8 {
 namespace internal {
 
 
@@ skipping 33 matching lines @@
       }
     }
   }
 }
 
 
 void HMarkUnreachableBlocksPhase::Run() {
   MarkUnreachableBlocks();
 }
 
-} }  // namespace v8::internal
+}  // namespace internal
+}  // namespace v8