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diff --git a/toolkit/crashreporter/google-breakpad/src/client/linux/minidump_writer/linux_core_dumper.h b/toolkit/crashreporter/google-breakpad/src/client/linux/minidump_writer/linux_core_dumper.h
deleted file mode 100644
index 8a7c924b6..000000000
--- a/toolkit/crashreporter/google-breakpad/src/client/linux/minidump_writer/linux_core_dumper.h
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@@ -1,125 +0,0 @@
-// Copyright (c) 2012, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// linux_core_dumper.h: Define the google_breakpad::LinuxCoreDumper
-// class, which is derived from google_breakpad::LinuxDumper to extract
-// information from a crashed process via its core dump and proc files.
-
-#ifndef CLIENT_LINUX_MINIDUMP_WRITER_LINUX_CORE_DUMPER_H_
-#define CLIENT_LINUX_MINIDUMP_WRITER_LINUX_CORE_DUMPER_H_
-
-#include "client/linux/minidump_writer/linux_dumper.h"
-#include "common/linux/elf_core_dump.h"
-#include "common/linux/memory_mapped_file.h"
-
-namespace google_breakpad {
-
-class LinuxCoreDumper : public LinuxDumper {
- public:
-  // Constructs a dumper for extracting information of a given process
-  // with a process ID of |pid| via its core dump file at |core_path| and
-  // its proc files at |procfs_path|. If |procfs_path| is a copy of
-  // /proc/<pid>, it should contain the following files:
-  //     auxv, cmdline, environ, exe, maps, status
-  // See LinuxDumper for the purpose of |root_prefix|.
-  LinuxCoreDumper(pid_t pid, const char* core_path, const char* procfs_path,
-                  const char* root_prefix = "");
-
-  // Implements LinuxDumper::BuildProcPath().
-  // Builds a proc path for a certain pid for a node (/proc/<pid>/<node>).
-  // |path| is a character array of at least NAME_MAX bytes to return the
-  // result.|node| is the final node without any slashes. Return true on
-  // success.
-  //
-  // As this dumper performs a post-mortem dump and makes use of a copy
-  // of the proc files of the crashed process, this derived method does
-  // not actually make use of |pid| and always returns a subpath of
-  // |procfs_path_| regardless of whether |pid| corresponds to the main
-  // process or a thread of the process, i.e. assuming both the main process
-  // and its threads have the following proc files with the same content:
-  //     auxv, cmdline, environ, exe, maps, status
-  virtual bool BuildProcPath(char* path, pid_t pid, const char* node) const;
-
-  // Implements LinuxDumper::CopyFromProcess().
-  // Copies content of |length| bytes from a given process |child|,
-  // starting from |src|, into |dest|. This method extracts the content
-  // the core dump and fills |dest| with a sequence of marker bytes
-  // if the expected data is not found in the core dump. Returns true if
-  // the expected data is found in the core dump.
-  virtual bool CopyFromProcess(void* dest, pid_t child, const void* src,
-                               size_t length);
-
-  // Implements LinuxDumper::GetThreadInfoByIndex().
-  // Reads information about the |index|-th thread of |threads_|.
-  // Returns true on success. One must have called |ThreadsSuspend| first.
-  virtual bool GetThreadInfoByIndex(size_t index, ThreadInfo* info);
-
-  // Implements LinuxDumper::IsPostMortem().
-  // Always returns true to indicate that this dumper performs a
-  // post-mortem dump of a crashed process via a core dump file.
-  virtual bool IsPostMortem() const;
-
-  // Implements LinuxDumper::ThreadsSuspend().
-  // As the dumper performs a post-mortem dump via a core dump file,
-  // there is no threads to suspend. This method does nothing and
-  // always returns true.
-  virtual bool ThreadsSuspend();
-
-  // Implements LinuxDumper::ThreadsResume().
-  // As the dumper performs a post-mortem dump via a core dump file,
-  // there is no threads to resume. This method does nothing and
-  // always returns true.
-  virtual bool ThreadsResume();
-
- protected:
-  // Implements LinuxDumper::EnumerateThreads().
-  // Enumerates all threads of the given process into |threads_|.
-  virtual bool EnumerateThreads();
-
- private:
-  // Path of the core dump file.
-  const char* core_path_;
-
-  // Path of the directory containing the proc files of the given process,
-  // which is usually a copy of /proc/<pid>.
-  const char* procfs_path_;
-
-  // Memory-mapped core dump file at |core_path_|.
-  MemoryMappedFile mapped_core_file_;
-
-  // Content of the core dump file.
-  ElfCoreDump core_;
-
-  // Thread info found in the core dump file.
-  wasteful_vector<ThreadInfo> thread_infos_;
-};
-
-}  // namespace google_breakpad
-
-#endif  // CLIENT_LINUX_HANDLER_LINUX_CORE_DUMPER_H_