Remove ExceptionState::throwIfNeeded

third_party/WebKit/Source/bindings/scripts/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 350 matching lines @@
 
     script_wrappable = 'impl' if inherits_interface(interface_name, 'Node') else ''
     return idl_type.v8_set_return_value(cpp_value, extended_attributes, script_wrappable=script_wrappable, for_main_world=for_main_world, is_static=method.is_static)
 
 
 def v8_value_to_local_cpp_variadic_value(method, argument, index, return_promise):
     assert argument.is_variadic
     idl_type = argument.idl_type
     this_cpp_type = idl_type.cpp_type
 
-    if method.returns_promise:
-        check_expression = 'exceptionState.hadException()'
-    else:
-        check_expression = 'exceptionState.throwIfNeeded()'
-
     if idl_type.is_dictionary or idl_type.is_union_type:
         vector_type = 'HeapVector'
     else:
         vector_type = 'Vector'
 
     return {
         'assign_expression': 'toImplArguments<%s<%s>>(info, %s, exceptionState)' % (vector_type, this_cpp_type, index),
-        'check_expression': check_expression,
+        'check_expression': 'exceptionState.hadException()',
+        'clear_exception': 'exceptionState.clearException()' if method.returns_promise else '',
         'cpp_type': this_cpp_type,
         'cpp_name': argument.name,
         'declare_variable': False,
     }
 
 
 def v8_value_to_local_cpp_value(method, argument, index, return_promise=False, restricted_float=False):
     extended_attributes = argument.extended_attributes
     idl_type = argument.idl_type
     name = argument.name
@@ skipping 70 matching lines @@
     return method.idl_type and method.idl_type.name == 'Promise'
 
 IdlOperation.returns_promise = property(method_returns_promise)
 
 
 def argument_conversion_needs_exception_state(method, argument):
     idl_type = argument.idl_type
     return (idl_type.v8_conversion_needs_exception_state or
             argument.is_variadic or
             (method.returns_promise and idl_type.is_string_type))