Fix a potential memory leak bug.

base/json/json_value_converter.h

 // 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.
 
 #ifndef BASE_JSON_JSON_VALUE_CONVERTER_H_
 #define BASE_JSON_JSON_VALUE_CONVERTER_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 241 matching lines @@
       // The field is not a list.
       return false;
     }
 
     field->reserve(list->GetSize());
     for (size_t i = 0; i < list->GetSize(); ++i) {
       base::Value* element = NULL;
       if (!list->Get(i, &element))
         continue;
 
-      Element *e = new Element;
-      if (basic_converter_.Convert(*element, e)) {
-        field->push_back(e);
+      scoped_ptr<Element> e(new Element);
+      if (basic_converter_.Convert(*element, e.get())) {
+        field->push_back(e.release());
       } else {
         DVLOG(1) << "failure at " << i << "-th element";
         return false;
       }
     }
     return true;
   }
 
  private:
   BasicValueConverter<Element> basic_converter_;
@@ skipping 11 matching lines @@
     const base::ListValue* list = NULL;
     if (!value.GetAsList(&list))
       return false;
 
     field->reserve(list->GetSize());
     for (size_t i = 0; i < list->GetSize(); ++i) {
       base::Value* element = NULL;
       if (!list->Get(i, &element))
         continue;
 
-      NestedType* nested = new NestedType();
-      if (converter_.Convert(*element, nested)) {
-        field->push_back(nested);
+      scoped_ptr<NestedType> nested(new NestedType);
+      if (converter_.Convert(*element, nested.get())) {
+        field->push_back(nested.release());
       } else {
         DVLOG(1) << "failure at " << i << "-th element";
         return false;
       }
     }
     return true;
   }
 
  private:
   JSONValueConverter<NestedType> converter_;
@@ skipping 128 matching lines @@
 
  private:
   ScopedVector<internal::FieldConverterBase> fields_;
 
   DISALLOW_COPY_AND_ASSIGN(JSONValueConverter);
 };
 
 }  // namespace base
 
 #endif  // BASE_JSON_JSON_VALUE_CONVERTER_H_