Auto merge of #23748 - saschanaz:default-dict, r=Manishearth

Sync WebIDL.py with gecko

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The new change requires default dictionary value for optional dictionary-type arguments.

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- [ ] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #23703

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- [x] There are tests for these changes

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1 files changed, 3 insertions, 3 deletions

diff --git a/components/script/dom/webidls/DOMMatrix.webidl b/components/script/dom/webidls/DOMMatrix.webidl
index d617f20af99..ffaa720b7d9 100644
--- a/components/script/dom/webidls/DOMMatrix.webidl
+++ b/components/script/dom/webidls/DOMMatrix.webidl
@@ -14,7 +14,7 @@
  Exposed=(Window,Worker)]
 interface DOMMatrix : DOMMatrixReadOnly {
 
-    [NewObject, Throws] static DOMMatrix fromMatrix(optional DOMMatrixInit other);
+    [NewObject, Throws] static DOMMatrix fromMatrix(optional DOMMatrixInit other = {});
     [NewObject, Throws] static DOMMatrix fromFloat32Array(Float32Array array32);
     [NewObject, Throws] static DOMMatrix fromFloat64Array(Float64Array array64);
 
@@ -44,8 +44,8 @@ interface DOMMatrix : DOMMatrixReadOnly {
     inherit attribute unrestricted double m44;
 
     // Mutable transform methods
-    [Throws] DOMMatrix multiplySelf(optional DOMMatrixInit other);
-    [Throws] DOMMatrix preMultiplySelf(optional DOMMatrixInit other);
+    [Throws] DOMMatrix multiplySelf(optional DOMMatrixInit other = {});
+    [Throws] DOMMatrix preMultiplySelf(optional DOMMatrixInit other = {});
     DOMMatrix translateSelf(optional unrestricted double tx = 0,
                             optional unrestricted double ty = 0,
                             optional unrestricted double tz = 0);