Move GUID utils to src/chrome/common.

base/guid_posix.cc

Index: base/guid_posix.cc
diff --git a/chrome/browser/guid_posix.cc b/base/guid_posix.cc
similarity index 92%
rename from chrome/browser/guid_posix.cc
rename to base/guid_posix.cc
index 48d719826f334639d0837acde234bb086b40eb02..9a83bf0c095706a1faef615eac9a644c061e9be7 100644
--- a/chrome/browser/guid_posix.cc
+++ b/base/guid_posix.cc
@@ -2,12 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/guid.h"
+#include "base/guid.h"
 
 #include "base/rand_util.h"
 #include "base/stringprintf.h"
 
-namespace guid {
+namespace base {
 
 std::string GenerateGUID() {
   uint64 sixteen_bytes[2] = { base::RandUint64(), base::RandUint64() };
@@ -25,4 +25,4 @@ std::string RandomDataToGUIDString(const uint64 bytes[2]) {
                       bytes[1] & 0x0000ffffffffffffULL);
 }
 
-}  // namespace guid
+}  // namespace base