Add test for requestAutocomplete and readonly attribute.

chrome/browser/ui/autofill/autofill_dialog_controller_browsertest.cc

Index: chrome/browser/ui/autofill/autofill_dialog_controller_browsertest.cc
diff --git a/chrome/browser/ui/autofill/autofill_dialog_controller_browsertest.cc b/chrome/browser/ui/autofill/autofill_dialog_controller_browsertest.cc
index f2c90cf6aec0fecd151b62e931673017d37270dc..464eaf4e028bf6a25517e8b8a845095e7a5d383d 100644
--- a/chrome/browser/ui/autofill/autofill_dialog_controller_browsertest.cc
+++ b/chrome/browser/ui/autofill/autofill_dialog_controller_browsertest.cc
@@ -1772,4 +1772,19 @@ IN_PROC_BROWSER_TEST_F(AutofillDialogControllerTest,
   EXPECT_EQ(ASCIIToUTF16("USD"), controller->transaction_currency_);
 }
 
+// Same as above, plus readonly attribute.
+IN_PROC_BROWSER_TEST_F(AutofillDialogControllerTest,
+                       TransactionAmountReadonly) {
+  std::string html(
+      "<input type='number' step='0.01'"
+      "   autocomplete='transaction-amount' value='24' readonly>"
+      "<input autocomplete='transaction-currency' value='USD' readonly>"
+      "<input autocomplete='cc-csc'>");
+  AutofillDialogControllerImpl* controller = SetUpHtmlAndInvoke(html);
+  ASSERT_TRUE(controller);
+
+  EXPECT_EQ(ASCIIToUTF16("24"), controller->transaction_amount_);
+  EXPECT_EQ(ASCIIToUTF16("USD"), controller->transaction_currency_);
+}
+
 }  // namespace autofill