Remove calls to IsRunningSequenceOnCurrentThread() from plugin_service_impl.cc

content/browser/plugin_service_impl.h

 // Copyright (c) 2012 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.
 
 // This class responds to requests from renderers for the list of plugins, and
 // also a proxy object for plugin instances.
 
 #ifndef CONTENT_BROWSER_PLUGIN_SERVICE_IMPL_H_
 #define CONTENT_BROWSER_PLUGIN_SERVICE_IMPL_H_
 
 #if !defined(ENABLE_PLUGINS)
 #error "Plugins should be enabled"
 #endif
 
 #include <map>
 #include <memory>
 #include <set>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
+#include "base/memory/ref_counted.h"
 #include "base/memory/scoped_vector.h"
 #include "base/memory/singleton.h"
+#include "base/sequence_checker.h"
+#include "base/sequenced_task_runner.h"
 #include "base/synchronization/waitable_event_watcher.h"
-#include "base/threading/sequenced_worker_pool.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "content/browser/ppapi_plugin_process_host.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/plugin_service.h"
 #include "content/public/common/pepper_plugin_info.h"
 #include "ipc/ipc_channel_handle.h"
 #include "url/gurl.h"
 
 #if defined(OS_WIN)
@@ skipping 106 matching lines @@
 
   // Run on the blocking pool to load the plugins synchronously.
   void GetPluginsInternal(base::SingleThreadTaskRunner* target_task_runner,
                           const GetPluginsCallback& callback);
 
   std::vector<PepperPluginInfo> ppapi_plugins_;
 
   // Weak pointer; outlives us.
   PluginServiceFilter* filter_;
 
-  // Used to sequentialize loading plugins from disk.
-  base::SequencedWorkerPool::SequenceToken plugin_list_token_;
+  // Used to load plugins from disk.
+  scoped_refptr<base::SequencedTaskRunner> plugin_list_task_runner_;
+
+  // Used to verify that loading plugins from disk is done sequentially.
+  base::SequenceChecker plugin_list_sequence_checker_;
 
   // Used to detect if a given plugin is crashing over and over.
   std::map<base::FilePath, std::vector<base::Time> > crash_times_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginServiceImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_PLUGIN_SERVICE_IMPL_H_