Fix DCHECK() when updating instruments with no phone number.

components/autofill/content/browser/wallet/instrument.cc

Index: components/autofill/content/browser/wallet/instrument.cc
diff --git a/components/autofill/content/browser/wallet/instrument.cc b/components/autofill/content/browser/wallet/instrument.cc
index d50bc453638147e40999d6cab07cda1ee188308d..11f3c2643df5c942e10ab7b8166c80403bc489da 100644
--- a/components/autofill/content/browser/wallet/instrument.cc
+++ b/components/autofill/content/browser/wallet/instrument.cc
@@ -115,6 +115,7 @@ scoped_ptr<base::DictionaryValue> Instrument::ToDictionary() const {
 }
 
 void Instrument::Init() {
+  expiration_differs_from_server_ = false;

[Evan Stade, 2013/12/07 02:36:12]

you have to put this in all the constructors unfortunately, otherwise I think
coverity will complain.

[Dan Beam, 2013/12/10 22:04:31]

Done.

   if (primary_account_number_.size() >= 4) {
     last_four_digits_ =
         primary_account_number_.substr(primary_account_number_.size() - 4);