[presubmit] Enable readability/namespace linter checking.

src/profiler/cpu-profiler-inl.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_CPU_PROFILER_INL_H_
 #define V8_PROFILER_CPU_PROFILER_INL_H_
 
 #include "src/profiler/cpu-profiler.h"
 
 #include <new>
@@ skipping 56 matching lines @@
   TickSampleEventRecord* evt =
       new(address) TickSampleEventRecord(last_code_event_id_);
   return &evt->sample;
 }
 
 
 void ProfilerEventsProcessor::FinishTickSample() {
   ticks_buffer_.FinishEnqueue();
 }
 
-} }  // namespace v8::internal
+}  // namespace internal
+}  // namespace v8
 
 #endif  // V8_PROFILER_CPU_PROFILER_INL_H_