Make element removal methods in DictionaryValue and ListValue take scoped_ptr's as outparams.

chrome/browser/ui/webui/about_ui.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/ui/webui/about_ui.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 837 matching lines @@
     // Get about_stats.html/js from resource bundle.
     data = ResourceBundle::GetSharedInstance().GetRawDataResource(
         (query == kStatsJsPath ?
          IDR_ABOUT_STATS_JS : IDR_ABOUT_STATS_HTML)).as_string();
 
     if (query != kStatsJsPath) {
       // Clear the timer list since we stored the data in the timers list
       // as well.
       for (int index = static_cast<int>(timers->GetSize())-1; index >= 0;
            index--) {
-        Value* value;
+        scoped_ptr<Value> value;
         timers->Remove(index, &value);
         // We don't care about the value pointer; it's still tracked
         // on the counters list.
+        ignore_result(value.release());
       }
     }
   }
 
   return data;
 }
 
 #if defined(OS_LINUX) || defined(OS_OPENBSD)
 std::string AboutLinuxProxyConfig() {
   std::string data;
@@ skipping 319 matching lines @@
   Profile* profile = Profile::FromWebUI(web_ui);
 
 #if defined(ENABLE_THEMES)
   // Set up the chrome://theme/ source.
   ThemeSource* theme = new ThemeSource(profile);
   content::URLDataSource::Add(profile, theme);
 #endif
 
   content::URLDataSource::Add(profile, new AboutUIHTMLSource(name, profile));
 }