Logs different SaveCardPrompt histogram names depending on if user

components/autofill/core/browser/autofill_save_card_infobar_delegate_mobile.h

Index: components/autofill/core/browser/autofill_save_card_infobar_delegate_mobile.h
diff --git a/components/autofill/core/browser/autofill_save_card_infobar_delegate_mobile.h b/components/autofill/core/browser/autofill_save_card_infobar_delegate_mobile.h
index d507696c7370fd9e4e559d639b01c48cfe7be431..d1a0d2297b8be651f8e53a7ce59c01caeab6f5d2 100644
--- a/components/autofill/core/browser/autofill_save_card_infobar_delegate_mobile.h
+++ b/components/autofill/core/browser/autofill_save_card_infobar_delegate_mobile.h
@@ -14,6 +14,8 @@
 #include "components/autofill/core/browser/legal_message_line.h"
 #include "components/infobars/core/confirm_infobar_delegate.h"
 
+class PrefService;
+
 namespace base {
 class DictionaryValue;
 }
@@ -30,7 +32,8 @@ class AutofillSaveCardInfoBarDelegateMobile : public ConfirmInfoBarDelegate {
       bool upload,
       const CreditCard& card,
       std::unique_ptr<base::DictionaryValue> legal_message,
-      const base::Closure& save_card_callback);
+      const base::Closure& save_card_callback,
+      PrefService* pref_service);
 
   ~AutofillSaveCardInfoBarDelegateMobile() override;
 
@@ -64,6 +67,9 @@ class AutofillSaveCardInfoBarDelegateMobile : public ConfirmInfoBarDelegate {
   // The callback to save credit card if the user accepts the infobar.
   base::Closure save_card_callback_;
 
+  // Weak reference to read & write |kAutofillAcceptSaveCreditCardPromptState|,
+  PrefService* pref_service_;
+
   // Did the user ever explicitly accept or dismiss this infobar?
   bool had_user_interaction_;