NaCl: Split the debug exception handler thread into a separate file

chrome/common/nacl_debug_exception_handler_win.h

Index: chrome/common/nacl_debug_exception_handler_win.h
diff --git a/chrome/common/nacl_debug_exception_handler_win.h b/chrome/common/nacl_debug_exception_handler_win.h
new file mode 100644
index 0000000000000000000000000000000000000000..4965f93bdae694953bf7418e5206c82447482454
--- /dev/null
+++ b/chrome/common/nacl_debug_exception_handler_win.h
@@ -0,0 +1,16 @@
+// 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.
+
+#ifndef CHROME_COMMON_NACL_DEBUG_EXCEPTION_HANDLER_WIN_H_
+#define CHROME_COMMON_NACL_DEBUG_EXCEPTION_HANDLER_WIN_H_
+#pragma once
+
+#include "base/callback.h"
+#include "base/message_loop.h"
+
+void NaClStartDebugExceptionHandlerThread(int32 nacl_process_id,
+                                          base::MessageLoopProxy* message_loop,
+                                          const base::Closure& on_connected);
+
+#endif  // CHROME_COMMON_NACL_DEBUG_EXCEPTION_HANDLER_WIN_H_