Make HasAutocompleteAttributeValue handle multi-valued strings

components/autofill/core/common/autofill_util.cc

Index: components/autofill/core/common/autofill_util.cc
diff --git a/components/autofill/core/common/autofill_util.cc b/components/autofill/core/common/autofill_util.cc
index faf019e8cdbecb36a56069c90ca5113bf30f1746..bc458a9609cd5331fc11fb2800dd4798eb9ec76d 100644
--- a/components/autofill/core/common/autofill_util.cc
+++ b/components/autofill/core/common/autofill_util.cc
@@ -5,7 +5,6 @@
 #include "components/autofill/core/common/autofill_util.h"
 
 #include <algorithm>
-#include <vector>
 
 #include "base/command_line.h"
 #include "base/i18n/case_conversion.h"
@@ -132,4 +131,11 @@ void SetCheckStatus(FormFieldData* form_field_data,
   }
 }
 
+std::vector<std::string> LowercaseAndTokenizeAttributeString(
+    const std::string& attribute) {
+  return base::SplitString(base::ToLowerASCII(attribute),
+                           base::kWhitespaceASCII, base::TRIM_WHITESPACE,
+                           base::SPLIT_WANT_NONEMPTY);
+}
+
 }  // namespace autofill