Autofill: Check for common angular js prefix when filling exp month.

components/autofill/core/browser/autofill_field_unittest.cc

Index: components/autofill/core/browser/autofill_field_unittest.cc
diff --git a/components/autofill/core/browser/autofill_field_unittest.cc b/components/autofill/core/browser/autofill_field_unittest.cc
index 09cc6f4b76cc16da3d0712f885ba18dc9f9dfe28..ae389d69b0088c67367cdc08d82335aa8367bc12 100644
--- a/components/autofill/core/browser/autofill_field_unittest.cc
+++ b/components/autofill/core/browser/autofill_field_unittest.cc
@@ -538,6 +538,12 @@ TEST_F(AutofillFieldTest, FillSelectControlWithExpirationMonth) {
        NotNumericMonthsContentsWithPlaceholder()},
       // Values start at 1 after a negative number.
       {{"-1", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12"},
+       NotNumericMonthsContentsWithPlaceholder()},
+      // The AngularJS framework adds a prefix to number types. Test that it is
+      // removed.
+      {{"number:1", "number:2", "number:3", "number:4", "number:5", "number:6",
+        "number:7", "number:8", "number:9", "number:10", "number:11",
+        "number:12"},
        NotNumericMonthsContentsWithPlaceholder()}};
 
   for (TestCase test_case : test_cases) {