Move guid generation from chrome/common/ to base/.

chrome/common/guid_posix.cc

-// Copyright (c) 2008 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.
-
-#include "chrome/common/guid.h"
-
-#include "base/rand_util.h"
-#include "base/stringprintf.h"
-
-namespace guid {
-
-std::string GenerateGUID() {
-  uint64 sixteen_bytes[2] = { base::RandUint64(), base::RandUint64() };
-  return RandomDataToGUIDString(sixteen_bytes);
-}
-
-// TODO(cmasone): Once we're comfortable this works, migrate Windows code to
-// use this as well.
-std::string RandomDataToGUIDString(const uint64 bytes[2]) {
-  return StringPrintf("%08X-%04X-%04X-%04X-%012llX",
-                      static_cast<unsigned int>(bytes[0] >> 32),
-                      static_cast<unsigned int>((bytes[0] >> 16) & 0x0000ffff),
-                      static_cast<unsigned int>(bytes[0] & 0x0000ffff),
-                      static_cast<unsigned int>(bytes[1] >> 48),
-                      bytes[1] & 0x0000ffffffffffffULL);
-}
-
-}  // namespace guid