Remove calls to IsRunningSequenceOnCurrentThread() from crash_handler_host_linux.cc

components/crash/content/browser/crash_handler_host_linux.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 COMPONENTS_CRASH_CONTENT_BROWSER_CRASH_HANDLER_HOST_LINUX_H_
 #define COMPONENTS_CRASH_CONTENT_BROWSER_CRASH_HANDLER_HOST_LINUX_H_
 
 #include <sys/types.h>
 
 #include <string>
 #include <utility>
 
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
+#include "base/sequence_checker.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "components/crash/content/app/breakpad_linux_impl.h"
 
 namespace base {
 class Thread;
 }
 
 namespace breakpad {
 
 struct BreakpadInfo;
@@ skipping 68 matching lines @@
   int browser_socket_;
 
   base::MessageLoopForIO::FileDescriptorWatcher file_descriptor_watcher_;
   std::unique_ptr<base::Thread> uploader_thread_;
   bool shutting_down_;
 
   // Unique sequence token so that writing crash dump won't be blocked
   // by other tasks.
   base::SequencedWorkerPool::SequenceToken worker_pool_token_;
 
+  // Used to verify that calls to WriteDumpFile() are sequenced.
+  base::SequenceChecker write_dump_file_sequence_checker_;
+
   DISALLOW_COPY_AND_ASSIGN(CrashHandlerHostLinux);
 };
 
 }  // namespace breakpad
 
 #endif  // COMPONENTS_CRASH_CONTENT_BROWSER_CRASH_HANDLER_HOST_LINUX_H_