[presubmit] Enable readability/namespace linter checking.

src/optimizing-compile-dispatcher.h

Index: src/optimizing-compile-dispatcher.h
diff --git a/src/optimizing-compile-dispatcher.h b/src/optimizing-compile-dispatcher.h
index ad09dfa734be336e791aef8f6360dbe642f3439a..9c4e4cb8df17bf85d8c6d43a7ca190d9707c469c 100644
--- a/src/optimizing-compile-dispatcher.h
+++ b/src/optimizing-compile-dispatcher.h
@@ -131,7 +131,7 @@ class OptimizingCompileDispatcher {
   // is not safe to access them directly.
   int recompilation_delay_;
 };
-}
-}  // namespace v8::internal
+}  // namespace internal
+}  // namespace v8
 
 #endif  // V8_OPTIMIZING_COMPILE_DISPATCHER_H_