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-rw-r--r--components/script/dom/bindings/codegen/parser/WebIDL.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/components/script/dom/bindings/codegen/parser/WebIDL.py b/components/script/dom/bindings/codegen/parser/WebIDL.py
index 09368e45aa7..90ec9e88921 100644
--- a/components/script/dom/bindings/codegen/parser/WebIDL.py
+++ b/components/script/dom/bindings/codegen/parser/WebIDL.py
@@ -1357,7 +1357,8 @@ class IDLInterface(IDLObjectWithScope, IDLExposureMixins):
identifier == "ChromeOnly" or
identifier == "Unforgeable" or
identifier == "UnsafeInPrerendering" or
- identifier == "LegacyEventInit"):
+ identifier == "LegacyEventInit" or
+ identifier == "Abstract"):
# Known extended attributes that do not take values
if not attr.noArguments():
raise WebIDLError("[%s] must take no arguments" % identifier,