binding: Retires 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 ee4ba6744d1ad91225e228715b652147206a6b2e..32900712025a32bf294dbf99c444c34891b063ff 100644
--- a/third_party/WebKit/Source/bindings/scripts/v8_methods.py
+++ b/third_party/WebKit/Source/bindings/scripts/v8_methods.py
@@ -427,11 +427,6 @@ 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:
@@ -439,7 +434,7 @@ 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()',
         'cpp_type': this_cpp_type,
         'cpp_name': argument.name,
         'declare_variable': False,