[presubmit] Enable readability/namespace linter checking.

src/profiler/circular-queue.h

 // Copyright 2010 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.
 
 #ifndef V8_PROFILER_CIRCULAR_QUEUE_H_
 #define V8_PROFILER_CIRCULAR_QUEUE_H_
 
 #include "src/base/atomicops.h"
 #include "src/globals.h"
 
@@ skipping 45 matching lines @@
   Entry* Next(Entry* entry);
 
   Entry buffer_[Length];
   V8_ALIGNED(PROCESSOR_CACHE_LINE_SIZE) Entry* enqueue_pos_;
   V8_ALIGNED(PROCESSOR_CACHE_LINE_SIZE) Entry* dequeue_pos_;
 
   DISALLOW_COPY_AND_ASSIGN(SamplingCircularQueue);
 };
 
 
-} }  // namespace v8::internal
+}  // namespace internal
+}  // namespace v8
 
 #endif  // V8_PROFILER_CIRCULAR_QUEUE_H_