Fix drive-by memory leak in media_galleries_api.cc.

chrome/browser/extensions/api/media_galleries/media_galleries_api.cc

Index: chrome/browser/extensions/api/media_galleries/media_galleries_api.cc
diff --git a/chrome/browser/extensions/api/media_galleries/media_galleries_api.cc b/chrome/browser/extensions/api/media_galleries/media_galleries_api.cc
index 2f4edc6014fce183eead92e9fdb3df45025d949b..a1b2627b952c8e9d3759017754854c7a1d8443bb 100644
--- a/chrome/browser/extensions/api/media_galleries/media_galleries_api.cc
+++ b/chrome/browser/extensions/api/media_galleries/media_galleries_api.cc
@@ -114,7 +114,8 @@ void MediaGalleriesGetMediaFileSystemsFunction::ReturnGalleries(
   std::set<std::string> file_system_names;
   base::ListValue* list = new base::ListValue();
   for (size_t i = 0; i < filesystems.size(); i++) {
-    base::DictionaryValue* file_system_dict_value = new base::DictionaryValue();
+    scoped_ptr<base::DictionaryValue> file_system_dict_value(
+        new base::DictionaryValue());
 
     // Send the file system id so the renderer can create a valid FileSystem
     // object.
@@ -130,7 +131,7 @@ void MediaGalleriesGetMediaFileSystemsFunction::ReturnGalleries(
     file_system_dict_value->SetWithoutPathExpansion(
         "name", Value::CreateStringValue(filesystems[i].name));
 
-    list->Append(file_system_dict_value);
+    list->Append(file_system_dict_value.release());
 
     if (!filesystems[i].path.empty() &&
         MediaGalleriesPermission::HasReadAccess(*GetExtension())) {