[Autofill] Trim expiration month select values before converting them to months.

components/autofill/core/browser/autofill_field_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/autofill/core/browser/autofill_field.h"
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 452 matching lines @@
 TEST_F(AutofillFieldTest, FillSelectControlWithExpirationMonth) {
   typedef struct {
     std::vector<const char*> select_values;
     std::vector<const char*> select_contents;
   } TestCase;
 
   TestCase test_cases[] = {
       // Values start at 1.
       {{"1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12"},
        NotNumericMonthsContentsNoPlaceholder()},
+      // Values start at 1 but single digits are whitespace padded!
+      {{" 1", " 2", " 3", " 4", " 5", " 6", " 7", " 8", " 9", "10", "11", "12"},
+       NotNumericMonthsContentsNoPlaceholder()},
       // Values start at 0.
       {{"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11"},
        NotNumericMonthsContentsNoPlaceholder()},
       // Values start at 00.
       {{"00", "01", "02", "03", "04", "05", "06", "07", "08", "09", "10", "11"},
        NotNumericMonthsContentsNoPlaceholder()},
       // Values start at 0 and the first content is a placeholder.
       {{"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12"},
        NotNumericMonthsContentsWithPlaceholder()},
       // Values start at 1 and the first content is a placeholder.
@@ skipping 324 matching lines @@
     index = kBadIndex;
     ret = AutofillField::FindValueInSelectControl(
         field, UTF8ToUTF16("NoVaScOtIa"), &index);
     EXPECT_TRUE(ret);
     EXPECT_EQ(2U, index);
   }
 }
 
 }  // namespace
 }  // namespace autofill