Replace more ObserverList with base::ObserverList.

media/base/user_input_monitor_linux.cc

 // 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.
 
 #include "media/base/user_input_monitor.h"
 
 #include <sys/select.h>
 #include <unistd.h>
 #define XK_MISCELLANY
 #include <X11/keysymdef.h>
@@ skipping 50 matching lines @@
  private:
   // base::MessagePumpLibevent::Watcher interface.
   void OnFileCanReadWithoutBlocking(int fd) override;
   void OnFileCanWriteWithoutBlocking(int fd) override;
 
   // Processes key and mouse events.
   void ProcessXEvent(xEvent* event);
   static void ProcessReply(XPointer self, XRecordInterceptData* data);
 
   scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
-  scoped_refptr<ObserverListThreadSafe<UserInputMonitor::MouseEventListener> >
-      mouse_listeners_;
+  scoped_refptr<base::ObserverListThreadSafe<
+      UserInputMonitor::MouseEventListener>> mouse_listeners_;
 
   //
   // The following members should only be accessed on the IO thread.
   //
   base::MessagePumpLibevent::FileDescriptorWatcher controller_;
   Display* x_control_display_;
   Display* x_record_display_;
   XRecordRange* x_record_range_[2];
   XRecordContext x_record_context_;
   KeyboardEventCounter counter_;
@@ skipping 292 matching lines @@
 }  // namespace
 
 scoped_ptr<UserInputMonitor> UserInputMonitor::Create(
     const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner,
     const scoped_refptr<base::SingleThreadTaskRunner>& ui_task_runner) {
   return scoped_ptr<UserInputMonitor>(
       new UserInputMonitorLinux(io_task_runner));
 }
 
 }  // namespace media