Correct const accessors in base/values.(h|cc), Part II (ListValue)

chrome/browser/policy/policy_loader_win_unittest.cc

 // Copyright (c) 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 "chrome/browser/policy/policy_loader_win.h"
 
 #include <windows.h>
 
 #include "base/json/json_writer.h"
 #include "base/string16.h"
@@ skipping 77 matching lines @@
         }
       }
       return true;
     }
 
     case base::Value::TYPE_LIST: {
       const base::ListValue* list = NULL;
       if (!value.GetAsList(&list))
         return false;
       for (size_t i = 0; i < list->GetSize(); ++i) {
-        base::Value* item;
+        const base::Value* item;
         if (!list->Get(i, &item))
           return false;
         if (!InstallValue(*item, hive, path + kPathSep + name,
                           base::UintToString16(i + 1))) {
           return false;
         }
       }
       return true;
     }
 
@@ skipping 498 matching lines @@
   expected_policy.SetInteger("special-int2", -456);
   expected_policy.SetDouble("double1", 789.0);
   expected_policy.SetDouble("double2", 123.456e7);
   PolicyBundle expected;
   expected.Get(POLICY_DOMAIN_EXTENSIONS, "test")
       .LoadFrom(&expected_policy, POLICY_LEVEL_MANDATORY, POLICY_SCOPE_USER);
   EXPECT_TRUE(Matches(expected));
 }
 
 }  // namespace policy