mac: Only show the access Address Book prompt a fixed number of times.

components/autofill/core/browser/autofill_manager.cc

Index: components/autofill/core/browser/autofill_manager.cc
diff --git a/components/autofill/core/browser/autofill_manager.cc b/components/autofill/core/browser/autofill_manager.cc
index 76215f39b38046eb842c258c13560f40b08cc853..d9ab1aa3675a63ed0bdffd0fcf927972ce293515 100644
--- a/components/autofill/core/browser/autofill_manager.cc
+++ b/components/autofill/core/browser/autofill_manager.cc
@@ -230,6 +230,10 @@ void AutofillManager::RegisterProfilePrefs(
       prefs::kAutofillUseMacAddressBook,
       false,
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+  registry->RegisterIntegerPref(
+      prefs::kAutofillMacAddressBookShowedCount,
+      0,
+      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 #endif  // defined(OS_MACOSX) && !defined(OS_IOS)
 }
 
@@ -305,6 +309,12 @@ bool AutofillManager::AccessAddressBook() {
     return false;
   return personal_data_->AccessAddressBook();
 }
+
+void AutofillManager::ShowedAccessAddressBookPrompt() {
+  if (!personal_data_)
+    return;
+  return personal_data_->ShowedAccessAddressBookPrompt();
+}
 #endif  // defined(OS_MACOSX) && !defined(OS_IOS)
 
 bool AutofillManager::OnFormSubmitted(const FormData& form,