AU: Provide a reboot_if_needed D-Bus API.

utils.h

Index: utils.h
diff --git a/utils.h b/utils.h
index 5a3efe94414c1499a1ae7ea8c1ffc1a9c58f8049..9be2509793e9acfaffdee502a2ef4967fd4809a3 100644
--- a/utils.h
+++ b/utils.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -102,6 +102,9 @@ bool GetBootloader(BootLoader* out_bootloader);
 // Returns the error message, if any, from a GError pointer.
 const char* GetGErrorMessage(const GError* error);
 
+// Initiates a system reboot. Returns true on success, false otherwise.
+bool Reboot();
+
 // Log a string in hex to LOG(INFO). Useful for debugging.
 void HexDumpArray(const unsigned char* const arr, const size_t length);
 inline void HexDumpString(const std::string& str) {