Fixed "characters" typo in message validation when input length is 1

content/child/blink_platform_impl.cc

Index: content/child/blink_platform_impl.cc
diff --git a/content/child/blink_platform_impl.cc b/content/child/blink_platform_impl.cc
index 0b41bff1199ca0e08cb56193556e4d79a0bf3cbe..0eaf473389ffc81eef95798c673dd42ae1b9ee11 100644
--- a/content/child/blink_platform_impl.cc
+++ b/content/child/blink_platform_impl.cc
@@ -292,6 +292,8 @@ static int ToMessageID(WebLocalizedString::Name name) {
       return IDS_FORM_VALIDATION_TOO_LONG;
     case WebLocalizedString::ValidationTooShort:
       return IDS_FORM_VALIDATION_TOO_SHORT;
+    case WebLocalizedString::ValidationTooShortPlural:
+      return IDS_FORM_VALIDATION_TOO_SHORT_PLURAL;
     case WebLocalizedString::ValidationTypeMismatch:
       return IDS_FORM_VALIDATION_TYPE_MISMATCH;
     case WebLocalizedString::ValidationTypeMismatchForEmail: