[Autofill] Update the autocomplete types implementation to match the current HTML spec.

chrome/browser/autofill/autocomplete_history_manager_unittest.cc

Index: chrome/browser/autofill/autocomplete_history_manager_unittest.cc
diff --git a/chrome/browser/autofill/autocomplete_history_manager_unittest.cc b/chrome/browser/autofill/autocomplete_history_manager_unittest.cc
index e685eacff08657d4b3d8941bf3f6c56c36e926ae..8709420ced0836b4ff2d4bc271676ef9c567f049 100644
--- a/chrome/browser/autofill/autocomplete_history_manager_unittest.cc
+++ b/chrome/browser/autofill/autocomplete_history_manager_unittest.cc
@@ -73,7 +73,7 @@ TEST_F(AutocompleteHistoryManagerTest, CreditCardNumberValue) {
   valid_cc.label = ASCIIToUTF16("Credit Card");
   valid_cc.name = ASCIIToUTF16("ccnum");
   valid_cc.value = ASCIIToUTF16("4012888888881881");
-  valid_cc.form_control_type = ASCIIToUTF16("text");
+  valid_cc.form_control_type = "text";
   form.fields.push_back(valid_cc);
 
   EXPECT_CALL(*web_data_service_, AddFormFields(_)).Times(0);
@@ -96,7 +96,7 @@ TEST_F(AutocompleteHistoryManagerTest, NonCreditCardNumberValue) {
   invalid_cc.label = ASCIIToUTF16("Credit Card");
   invalid_cc.name = ASCIIToUTF16("ccnum");
   invalid_cc.value = ASCIIToUTF16("4580123456789012");
-  invalid_cc.form_control_type = ASCIIToUTF16("text");
+  invalid_cc.form_control_type = "text";
   form.fields.push_back(invalid_cc);
 
   EXPECT_CALL(*(web_data_service_.get()), AddFormFields(_)).Times(1);
@@ -116,7 +116,7 @@ TEST_F(AutocompleteHistoryManagerTest, SSNValue) {
   ssn.label = ASCIIToUTF16("Social Security Number");
   ssn.name = ASCIIToUTF16("ssn");
   ssn.value = ASCIIToUTF16("078-05-1120");
-  ssn.form_control_type = ASCIIToUTF16("text");
+  ssn.form_control_type = "text";
   form.fields.push_back(ssn);
 
   EXPECT_CALL(*web_data_service_, AddFormFields(_)).Times(0);
@@ -137,7 +137,7 @@ TEST_F(AutocompleteHistoryManagerTest, SearchField) {
   search_field.label = ASCIIToUTF16("Search");
   search_field.name = ASCIIToUTF16("search");
   search_field.value = ASCIIToUTF16("my favorite query");
-  search_field.form_control_type = ASCIIToUTF16("search");
+  search_field.form_control_type = "search";
   form.fields.push_back(search_field);
 
   EXPECT_CALL(*(web_data_service_.get()), AddFormFields(_)).Times(1);