Change more base::ListValue methods to use std::unique_ptr.

extensions/common/url_pattern_set.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 "extensions/common/url_pattern_set.h"
 
 #include <iterator>
 #include <ostream>
 
 #include "base/logging.h"
 #include "base/memory/linked_ptr.h"
+#include "base/memory/ptr_util.h"
 #include "base/stl_util.h"
 #include "base/values.h"
 #include "extensions/common/error_utils.h"
 #include "extensions/common/url_pattern.h"
 #include "url/gurl.h"
 #include "url/origin.h"
 #include "url/url_constants.h"
 
 namespace extensions {
 
@@ skipping 204 matching lines @@
     }
   }
 
   return false;
 }
 
 std::unique_ptr<base::ListValue> URLPatternSet::ToValue() const {
   std::unique_ptr<base::ListValue> value(new base::ListValue);
   for (URLPatternSet::const_iterator i = patterns_.begin();
        i != patterns_.end(); ++i)
-    value->AppendIfNotPresent(new base::StringValue(i->GetAsString()));
+    value->AppendIfNotPresent(
+        base::MakeUnique<base::StringValue>(i->GetAsString()));
   return value;
 }
 
 bool URLPatternSet::Populate(const std::vector<std::string>& patterns,
                              int valid_schemes,
                              bool allow_file_access,
                              std::string* error) {
   ClearPatterns();
   for (size_t i = 0; i < patterns.size(); ++i) {
     URLPattern pattern(valid_schemes);
@@ skipping 34 matching lines @@
   for (size_t i = 0; i < value.GetSize(); ++i) {
     std::string item;
     if (!value.GetString(i, &item))
       return false;
     patterns.push_back(item);
   }
   return Populate(patterns, valid_schemes, allow_file_access, error);
 }
 
 }  // namespace extensions