Move GUID utils to src/chrome/common.

chrome/browser/autofill/credit_card.cc

Index: chrome/browser/autofill/credit_card.cc
diff --git a/chrome/browser/autofill/credit_card.cc b/chrome/browser/autofill/credit_card.cc
index e8e0191a6848715db728f49d1c6f9ed60cdbe957..21fa509c6400bf88ef2cc0e1126b08d4dcbb625d 100644
--- a/chrome/browser/autofill/credit_card.cc
+++ b/chrome/browser/autofill/credit_card.cc
@@ -8,13 +8,13 @@
 
 #include "app/l10n_util.h"
 #include "base/basictypes.h"
+#include "base/guid.h"
 #include "base/string_util.h"
 #include "base/string_number_conversions.h"
 #include "base/string16.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/autofill/autofill_type.h"
 #include "chrome/browser/autofill/field_types.h"
-#include "chrome/browser/guid.h"
 #include "grit/generated_resources.h"
 
 namespace {
@@ -144,7 +144,7 @@ CreditCard::CreditCard(const std::string& guid)
 CreditCard::CreditCard()
     : expiration_month_(0),
       expiration_year_(0),
-      guid_(guid::GenerateGUID()) {
+      guid_(base::GenerateGUID()) {
 }
 
 CreditCard::CreditCard(const CreditCard& credit_card) : FormGroup() {