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diff --git a/toolkit/crashreporter/google-breakpad/src/processor/stackwalker_amd64.h b/toolkit/crashreporter/google-breakpad/src/processor/stackwalker_amd64.h
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--- a/toolkit/crashreporter/google-breakpad/src/processor/stackwalker_amd64.h
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@@ -1,116 +0,0 @@
-// Copyright (c) 2010 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.
-
-// stackwalker_amd64.h: amd64-specific stackwalker.
-//
-// Provides stack frames given amd64 register context and a memory region
-// corresponding to a amd64 stack.
-//
-// Author: Mark Mentovai, Ted Mielczarek
-
-
-#ifndef PROCESSOR_STACKWALKER_AMD64_H__
-#define PROCESSOR_STACKWALKER_AMD64_H__
-
-#include <vector>
-
-#include "google_breakpad/common/breakpad_types.h"
-#include "google_breakpad/common/minidump_format.h"
-#include "google_breakpad/processor/stackwalker.h"
-#include "google_breakpad/processor/stack_frame_cpu.h"
-#include "processor/cfi_frame_info.h"
-
-namespace google_breakpad {
-
-class CodeModules;
-
-class StackwalkerAMD64 : public Stackwalker {
- public:
-  // context is a amd64 context object that gives access to amd64-specific
-  // register state corresponding to the innermost called frame to be
-  // included in the stack.  The other arguments are passed directly through
-  // to the base Stackwalker constructor.
-  StackwalkerAMD64(const SystemInfo* system_info,
-                   const MDRawContextAMD64* context,
-                   MemoryRegion* memory,
-                   const CodeModules* modules,
-                   StackFrameSymbolizer* frame_symbolizer);
-
- private:
-  // A STACK CFI-driven frame walker for the AMD64
-  typedef SimpleCFIWalker<uint64_t, MDRawContextAMD64> CFIWalker;
-
-  // Implementation of Stackwalker, using amd64 context (stack pointer in %rsp,
-  // stack base in %rbp) and stack conventions (saved stack pointer at 0(%rbp))
-  virtual StackFrame* GetContextFrame();
-  virtual StackFrame* GetCallerFrame(const CallStack* stack,
-                                     bool stack_scan_allowed);
-
-  // Use cfi_frame_info (derived from STACK CFI records) to construct
-  // the frame that called frames.back(). The caller takes ownership
-  // of the returned frame. Return NULL on failure.
-  StackFrameAMD64* GetCallerByCFIFrameInfo(const vector<StackFrame*> &frames,
-                                           CFIFrameInfo* cfi_frame_info);
-
-  // Checks whether end-of-stack is reached.  An instruction address of 0 is an
-  // end-of-stack marker.  If the stack pointer of the caller is at a lower
-  // address than the stack pointer of the callee, then that's clearly incorrect
-  // and it is treated as end-of-stack to enforce progress and avoid infinite
-  // loops.
-  bool IsEndOfStack(uint64_t caller_rip, uint64_t caller_rsp,
-                    uint64_t callee_rsp);
-
-  // Assumes a traditional frame layout where the frame pointer has not been
-  // omitted. The expectation is that caller's %rbp is pushed to the stack
-  // after the return address of the callee, and that the callee's %rsp can
-  // be used to find the pushed %rbp.
-  // Caller owns the returned frame object. Returns NULL on failure.
-  StackFrameAMD64* GetCallerByFramePointerRecovery(
-      const vector<StackFrame*>& frames);
-
-  // Scan the stack for plausible return addresses. The caller takes ownership
-  // of the returned frame. Return NULL on failure.
-  StackFrameAMD64* GetCallerByStackScan(const vector<StackFrame*> &frames);
-
-  // Stores the CPU context corresponding to the innermost stack frame to
-  // be returned by GetContextFrame.
-  const MDRawContextAMD64* context_;
-
-  // Our register map, for cfi_walker_.
-  static const CFIWalker::RegisterSet cfi_register_map_[];
-
-  // Our CFI frame walker.
-  const CFIWalker cfi_walker_;
-};
-
-
-}  // namespace google_breakpad
-
-
-#endif  // PROCESSOR_STACKWALKER_AMD64_H__