Remove ExceptionState::throwIfNeeded

third_party/WebKit/Source/bindings/scripts/v8_methods.py

Index: third_party/WebKit/Source/bindings/scripts/v8_methods.py
diff --git a/third_party/WebKit/Source/bindings/scripts/v8_methods.py b/third_party/WebKit/Source/bindings/scripts/v8_methods.py
index 002860c69c2312cb08ba7138c508e950bf03cfa9..9d5275f882aaad1af7615c728b79eb1659138d7e 100644
--- a/third_party/WebKit/Source/bindings/scripts/v8_methods.py
+++ b/third_party/WebKit/Source/bindings/scripts/v8_methods.py
@@ -424,11 +424,6 @@ def v8_value_to_local_cpp_variadic_value(method, argument, index, return_promise
     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:
@@ -436,7 +431,8 @@ def v8_value_to_local_cpp_variadic_value(method, argument, index, return_promise
 
     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,