[Autofill] Credit Card Autofill Last Used Date Experiment

components/autofill/core/browser/personal_data_manager_unittest.cc

Index: components/autofill/core/browser/personal_data_manager_unittest.cc
diff --git a/components/autofill/core/browser/personal_data_manager_unittest.cc b/components/autofill/core/browser/personal_data_manager_unittest.cc
index 18bb0aebdd43692e5a59a927b3175659b6b0fd1f..3e918a3e69db1c8ef018ac6aabfbf338c1ead02f 100644
--- a/components/autofill/core/browser/personal_data_manager_unittest.cc
+++ b/components/autofill/core/browser/personal_data_manager_unittest.cc
@@ -3406,11 +3406,11 @@ TEST_F(PersonalDataManagerTest, GetProfileSuggestions_HideSubsets) {
   EXPECT_EQ(base::ASCIIToUTF16("Hollywood, TX"), suggestions[1].label);
 }
 
-// Tests that GetProfileSuggestions orders its suggestions based on the frecency
-// formula.
+// Tests that GetProfileSuggestions orders its suggestions based on the
+// frequency formula.
 TEST_F(PersonalDataManagerTest, GetProfileSuggestions_Ranking) {
   // Set up the profiles. They are named with number suffixes X so the X is the
-  // order in which they should be ordered by frecency.
+  // order in which they should be ordered by frequency.
   AutofillProfile profile3(base::GenerateGUID(), "https://www.example.com");
   test::SetProfileInfo(&profile3, "Marion3", "Mitchell", "Morrison",
                        "johnwayne@me.xyz", "Fox",
@@ -3614,8 +3614,8 @@ TEST_F(PersonalDataManagerTest,
   EXPECT_EQ(ASCIIToUTF16("Bonnie Parker"), suggestions[4].value);
 }
 
-// Test that expired cards are ordered by frecency and are always suggested
-// after non expired cards even if they have a higher frecency score.
+// Test that expired cards are ordered by frequency and are always suggested
+// after non expired cards even if they have a higher frequency score.
 TEST_F(PersonalDataManagerTest, GetCreditCardSuggestions_ExpiredCards) {
   ASSERT_EQ(0U, personal_data_->GetCreditCards().size());
 
@@ -3626,7 +3626,7 @@ TEST_F(PersonalDataManagerTest, GetCreditCardSuggestions_ExpiredCards) {
                           "518765432109" /* Mastercard */, "04", "2999");
   personal_data_->AddCreditCard(credit_card0);
 
-  // Add an expired card with a higher frecency score.
+  // Add an expired card with a higher frequency score.
   CreditCard credit_card1("287151C8-6AB1-487C-9095-28E80BE5DA15",
                           "https://www.example.com");
   test::SetCreditCardInfo(&credit_card1, "Clyde Barrow",
@@ -3635,7 +3635,7 @@ TEST_F(PersonalDataManagerTest, GetCreditCardSuggestions_ExpiredCards) {
   credit_card1.set_use_date(base::Time::Now() - base::TimeDelta::FromDays(10));
   personal_data_->AddCreditCard(credit_card1);
 
-  // Add an expired card with a lower frecency score.
+  // Add an expired card with a lower frequency score.
   CreditCard credit_card2("1141084B-72D7-4B73-90CF-3D6AC154673B",
                           "https://www.example.com");
   credit_card2.set_use_count(3);
@@ -3659,7 +3659,7 @@ TEST_F(PersonalDataManagerTest, GetCreditCardSuggestions_ExpiredCards) {
   // The never used non expired card should be suggested first.
   EXPECT_EQ(ASCIIToUTF16("Bonnie Parker"), suggestions[0].value);
 
-  // The expired cards should be sorted by frecency
+  // The expired cards should be sorted by frequency
   EXPECT_EQ(ASCIIToUTF16("Clyde Barrow"), suggestions[1].value);
   EXPECT_EQ(ASCIIToUTF16("John Dillinger"), suggestions[2].value);
 }
@@ -3814,6 +3814,9 @@ TEST_F(PersonalDataManagerTest,
   ASSERT_EQ(3U, suggestions.size());
 }
 
+// Tests that credit card last used date suggestion can be generated correctly
+// in different variations and locales
+
 // Tests that only the full server card is kept when deduping with a local
 // duplicate of it.
 TEST_F(PersonalDataManagerTest,