Introduce SmallTypedArray IDL type and use it for bufferSubData

Source/bindings/scripts/v8_methods.py

Index: Source/bindings/scripts/v8_methods.py
diff --git a/Source/bindings/scripts/v8_methods.py b/Source/bindings/scripts/v8_methods.py
index f0f9fd0e53dc06a298dd3dbfb816e14e70754779..35d5a9e9145940be1647d2f4820f83afe640e134 100644
--- a/Source/bindings/scripts/v8_methods.py
+++ b/Source/bindings/scripts/v8_methods.py
@@ -240,6 +240,7 @@ def argument_context(interface, method, argument, index):
         'is_explicit_nullable': idl_type.is_explicit_nullable,
         'is_nullable': idl_type.is_nullable,
         'is_optional': argument.is_optional,
+        'is_small_typed_array': idl_type.name == 'SmallTypedArray',
         'is_variadic': argument.is_variadic,
         'is_variadic_wrapper_type': is_variadic_wrapper_type,
         'is_wrapper_type': idl_type.is_wrapper_type,
@@ -274,6 +275,8 @@ def cpp_value(interface, method, number_of_arguments):
         idl_type = argument.idl_type
         if idl_type.name == 'EventListener':
             return argument.name
+        if idl_type.name == 'SmallTypedArray':
+            return '%s.first, %s.second' % (argument.name, argument.name)
         if (idl_type.name in ['NodeFilter', 'NodeFilterOrNull',
                               'XPathNSResolver', 'XPathNSResolverOrNull']):
             # FIXME: remove this special case