Extension activity log database refactoring (step 2)

chrome/browser/extensions/activity_log/stream_noargs_ui_policy.h

 // Copyright 2013 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 CHROME_BROWSER_EXTENSIONS_ACTIVITY_LOG_STREAM_NOARGS_UI_POLICY_H_
 #define CHROME_BROWSER_EXTENSIONS_ACTIVITY_LOG_STREAM_NOARGS_UI_POLICY_H_
 
 #include <string>
 #include "base/containers/hash_tables.h"
 #include "chrome/browser/extensions/activity_log/api_actions.h"
 #include "chrome/browser/extensions/activity_log/fullstream_ui_policy.h"
 
 namespace extensions {
 
 // A policy for logging the stream of actions, but without arguments.
 class StreamWithoutArgsUIPolicy : public FullStreamUIPolicy {
  public:
   explicit StreamWithoutArgsUIPolicy(Profile* profile);
   virtual ~StreamWithoutArgsUIPolicy();
 
  protected:
-  virtual std::string ProcessArguments(ActionType action_type,
-                                       const std::string& name,
-                                       const base::ListValue* args)
-                                       const OVERRIDE;
+  virtual scoped_ptr<base::ListValue> ProcessArguments(
+      ActionType action_type,
+      const std::string& name,
+      const base::ListValue* args) const OVERRIDE;
 
   virtual void ProcessWebRequestModifications(
       base::DictionaryValue& details,
       std::string& details_string) const OVERRIDE;
  private:
   base::hash_set<std::string> arg_whitelist_api_;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_ACTIVITY_LOG_STREAM_NOARGS_UI_POLICY_H_