[presubmit] Enable readability/namespace linter checking.

src/compiler/ast-loop-assignment-analyzer.h

Index: src/compiler/ast-loop-assignment-analyzer.h
diff --git a/src/compiler/ast-loop-assignment-analyzer.h b/src/compiler/ast-loop-assignment-analyzer.h
index cd56d0a7ef1b2f5943f0066f1c04c6ee3ef51705..c2b47a742c27bc36b965338184cb9e3864993ada 100644
--- a/src/compiler/ast-loop-assignment-analyzer.h
+++ b/src/compiler/ast-loop-assignment-analyzer.h
@@ -70,8 +70,8 @@ class AstLoopAssignmentAnalyzer : public AstVisitor {
   DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
   DISALLOW_COPY_AND_ASSIGN(AstLoopAssignmentAnalyzer);
 };
-}
-}
-}  // namespace v8::internal::compiler
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8
 
 #endif  // V8_COMPILER_AST_LOOP_ASSIGNMENT_ANALYZER_H_