Extensions: suspend extension's scripts when V8 is paused

extensions/renderer/scripts_run_info.h

 // Copyright 2014 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 EXTENSIONS_RENDERER_SCRIPTS_RUN_INFO_H_
 #define EXTENSIONS_RENDERER_SCRIPTS_RUN_INFO_H_
 
 #include <map>
 #include <set>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/macros.h"
+#include "base/memory/ref_counted.h"
 #include "base/timer/elapsed_timer.h"
 #include "extensions/common/user_script.h"
 
 namespace blink {
 class WebFrame;
 }
 
 namespace extensions {
 
 // A struct containing information about a script run.
-struct ScriptsRunInfo {
+struct ScriptsRunInfo : public base::RefCounted<ScriptsRunInfo> {
   // Map of extensions IDs to the executing script paths.
   typedef std::map<std::string, std::set<std::string> > ExecutingScriptsMap;
 
   ScriptsRunInfo();
-  ~ScriptsRunInfo();
 
   // The number of CSS scripts injected.
   size_t num_css;
   // The number of JS scripts injected.
   size_t num_js;
   // A map of extension ids to executing script paths.
   ExecutingScriptsMap executing_scripts;
   // The elapsed time since the ScriptsRunInfo was constructed.
   base::ElapsedTimer timer;
 
   // Log information about a given script run.
   void LogRun(blink::WebFrame* web_frame, UserScript::RunLocation location);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ScriptsRunInfo);
+
+  ~ScriptsRunInfo();
+  friend class base::RefCounted<ScriptsRunInfo>;
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_SCRIPTS_RUN_INFO_H_