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

chrome/browser/extensions/api/management/management_api.cc

Index: chrome/browser/extensions/api/management/management_api.cc
diff --git a/chrome/browser/extensions/api/management/management_api.cc b/chrome/browser/extensions/api/management/management_api.cc
index 3408fedc64354a69efb3f5da19b03448717fcb46..0af965c53154e2d883333c6ca9ad0991a3c6102a 100644
--- a/chrome/browser/extensions/api/management/management_api.cc
+++ b/chrome/browser/extensions/api/management/management_api.cc
@@ -268,10 +268,11 @@ class SafeManifestJSONParser : public UtilityProcessHostClient {
 
   void OnJSONParseSucceeded(const ListValue& wrapper) {
     CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-    Value* value = NULL;
+    const Value* value = NULL;
     CHECK(wrapper.Get(0, &value));
     if (value->IsType(Value::TYPE_DICTIONARY))
-      parsed_manifest_.reset(static_cast<DictionaryValue*>(value)->DeepCopy());
+      parsed_manifest_.reset(
+          static_cast<const DictionaryValue*>(value)->DeepCopy());
     else
       error_ = keys::kManifestParseError;