base: Add/Fix namespace closing comments.

base/stl_util_unittest.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/stl_util.h"
 
 #include <set>
 
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 10 matching lines @@
   }
 
   bool operator<(const ComparableValue& rhs) const {
     return value_ < rhs.value_;
   }
 
  private:
   int value_;
 };
 
-}
+}  // namespace
 
 namespace base {
 namespace {
 
 TEST(STLUtilTest, STLIsSorted) {
   {
     std::set<int> set;
     set.insert(24);
     set.insert(1);
     set.insert(12);
@@ skipping 216 matching lines @@
   // const_cast<char*>(str->data()).
   std::string s1("abc");
   const std::string s2(s1);
   string_as_array(&s1)[1] = 'x';
   EXPECT_EQ("axc", s1);
   EXPECT_EQ("abc", s2);
 }
 
 }  // namespace
 }  // namespace base