Improve handling of failed integer type conversions.

Source/bindings/scripts/unstable/v8_methods.py

 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 53 matching lines @@
     is_call_with_script_state = has_extended_attribute_value(method, 'CallWith', 'ScriptState')
     if is_call_with_script_state:
         includes.add('bindings/v8/ScriptState.h')
     is_check_security_for_node = 'CheckSecurity' in extended_attributes
     if is_check_security_for_node:
         includes.add('bindings/v8/BindingSecurity.h')
     is_custom_element_callbacks = 'CustomElementCallbacks' in extended_attributes
     if is_custom_element_callbacks:
         includes.add('core/dom/custom/CustomElementCallbackDispatcher.h')
 
-    # Used for 'has_exception_state' (do we have an ExceptionState variable?)
-    has_serialized_script_value_argument = any(
-        argument for argument in arguments
-        if argument.idl_type == 'SerializedScriptValue')
     is_check_security_for_frame = (
         'CheckSecurity' in interface.extended_attributes and
         'DoNotCheckSecurity' not in extended_attributes)
     is_raises_exception = 'RaisesException' in extended_attributes
 
     contents = {
         'activity_logging_world_list': v8_utilities.activity_logging_world_list(method),  # [ActivityLogging]
         'arguments': [generate_argument(interface, method, argument, index)
                       for index, argument in enumerate(arguments)],
         'conditional_string': v8_utilities.conditional_string(method),
         'cpp_type': v8_types.cpp_type(idl_type),
         'cpp_value': this_cpp_value,
         'deprecate_as': v8_utilities.deprecate_as(method),  # [DeprecateAs]
         'do_not_check_signature': not(is_static or
             v8_utilities.has_extended_attribute(method,
                 ['DoNotCheckSecurity', 'DoNotCheckSignature', 'NotEnumerable',
                  'ReadOnly', 'RuntimeEnabled', 'Unforgeable'])),
         'function_template': function_template(),
         'idl_type': idl_type,
         'has_exception_state':
-            is_raises_exception or is_check_security_for_frame or
-            has_serialized_script_value_argument or
+            is_raises_exception or
+            is_check_security_for_frame or
+            any(argument for argument in arguments
+                if argument.idl_type == 'SerializedScriptValue' or
+                   v8_types.is_integer_type(argument.idl_type)) or
             name in ['addEventListener', 'removeEventListener'],
-        'has_serialized_script_value_argument': has_serialized_script_value_argument,
         'is_call_with_execution_context': has_extended_attribute_value(method, 'CallWith', 'ExecutionContext'),
         'is_call_with_script_arguments': is_call_with_script_arguments,
         'is_call_with_script_state': is_call_with_script_state,
         'is_check_security_for_frame': is_check_security_for_frame,
         'is_check_security_for_node': is_check_security_for_node,
         'is_custom': 'Custom' in extended_attributes,
         'is_custom_element_callbacks': is_custom_element_callbacks,
         'is_do_not_check_security': 'DoNotCheckSecurity' in extended_attributes,
         'is_per_world_bindings': 'PerWorldBindings' in extended_attributes,
         'is_raises_exception': is_raises_exception,
@@ skipping 92 matching lines @@
         return 'V8TRYCATCH_VOID(Vector<{cpp_type}>, {name}, toNativeArguments<{cpp_type}>(info, {index}))'.format(
                 cpp_type=v8_types.cpp_type(idl_type), name=name, index=index)
     # [Default=NullString]
     if (argument.is_optional and idl_type == 'DOMString' and
         extended_attributes.get('Default') == 'NullString'):
         v8_value = 'argumentOrNull(info, %s)' % index
     else:
         v8_value = 'info[%s]' % index
     return v8_types.v8_value_to_local_cpp_value(
         idl_type, argument.extended_attributes, v8_value, name, index=index)