bindings: Make the sequence conversion code more complaint with WebIDL.

third_party/WebKit/Source/bindings/core/v8/ExceptionMessages.cpp

Index: third_party/WebKit/Source/bindings/core/v8/ExceptionMessages.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/ExceptionMessages.cpp b/third_party/WebKit/Source/bindings/core/v8/ExceptionMessages.cpp
index a075ee1c2a83dc15b8ac9c8d1b55dc89b0766fa3..b0f44d2702e5573dc4f8190733959f0fc9a98c1c 100644
--- a/third_party/WebKit/Source/bindings/core/v8/ExceptionMessages.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/ExceptionMessages.cpp
@@ -122,16 +122,6 @@ String ExceptionMessages::ArgumentNullOrIncorrectType(
          " object.";
 }
 
-String ExceptionMessages::NotAnArrayTypeArgumentOrValue(int argument_index) {
-  String kind;
-  if (argument_index)  // method argument
-    kind = OrdinalNumber(argument_index) + " argument";
-  else  // value, e.g. attribute setter
-    kind = "value provided";
-  return "The " + kind +
-         " is neither an array, nor does it have indexed properties.";
-}
-
 String ExceptionMessages::NotASequenceTypeProperty(
     const String& property_name) {
   return "'" + property_name +