Remove calls to MessageLoop::current() in chrome.

chrome/browser/extensions/extension_error_reporter.h

 // Copyright (c) 2011 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_EXTENSION_ERROR_REPORTER_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_ERROR_REPORTER_H_
 
 #include <string>
 #include <vector>
 
+#include "base/memory/ref_counted.h"
 #include "base/observer_list.h"
+#include "base/single_thread_task_runner.h"
 #include "base/strings/string16.h"
 
 namespace base {
-class MessageLoop;
 class FilePath;
 }
 
 namespace content {
 class BrowserContext;
 }
 
 // Exposes an easy way for the various components of the extension system to
 // report errors. This is a singleton that lives on the UI thread, with the
 // exception of ReportError() which may be called from any thread.
@@ skipping 44 matching lines @@
   void AddObserver(Observer* observer);
 
   void RemoveObserver(Observer* observer);
 
  private:
   static ExtensionErrorReporter* instance_;
 
   explicit ExtensionErrorReporter(bool enable_noisy_errors);
   ~ExtensionErrorReporter();
 
-  base::MessageLoop* ui_loop_;
+  scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner_;
   std::vector<base::string16> errors_;
   bool enable_noisy_errors_;
 
   base::ObserverList<Observer> observers_;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_ERROR_REPORTER_H_