[presubmit] Enable readability/namespace linter checking.

src/compilation-dependencies.h

Index: src/compilation-dependencies.h
diff --git a/src/compilation-dependencies.h b/src/compilation-dependencies.h
index c14220880f1f07087dc2144cceb01c42dd325f30..e7ee58fffc26d6aeb7017506150ebf6e83b1703b 100644
--- a/src/compilation-dependencies.h
+++ b/src/compilation-dependencies.h
@@ -61,7 +61,7 @@ class CompilationDependencies {
   DependentCode* Get(Handle<Object> object);
   void Set(Handle<Object> object, Handle<DependentCode> dep);
 };
-}
-}  // namespace v8::internal
+}  // namespace internal
+}  // namespace v8
 
 #endif  // V8_DEPENDENCIES_H_