Fix webmachinelearning#439: add missing conv2d() and convTranspose2d(…

…) validation steps

Signed-off-by: Zoltan Kis <[email protected]>

index.bs

@@ -2064,6 +2064,8 @@ partial interface MLGraphBuilder {
     1. If |options| is `undefined`, let |options| be an empty [=object=].
     1. If |options|.{{MLConv2dOptions/padding}} is `undefined`, set it to `[0, 0, 0, 0]`.
     1. If |options|.{{MLConv2dOptions/strides}} is `undefined`, set it to `[1, 1]`.
+    1. Else if |options|.{{MLConv2dOptions/strides}}.size() is not `2`, then throw a "{{TypeError}}" {{DOMException}} and stop.
+    1. If any element in |options|.{{MLConv2dOptions/strides}} is equal to 0, then throw a "{{TypeError}}" {{DOMException}} and stop.
     1. If |options|.{{MLConv2dOptions/dilations}} is `undefined`, set it to `[1, 1]`.
     1. If |options|.{{MLConv2dOptions/autoPad}} is `undefined`, set it to `"explicit"`.
     1. If |options|.{{MLConv2dOptions/groups}} is `undefined`, set it to `1`.
@@ -2230,6 +2232,8 @@ partial interface MLGraphBuilder {
     1. If |options| is `undefined`, let |options| be an empty [=object=].
     1. If |options|.{{MLConvTranspose2dOptions/padding}} is `undefined`, set it to `[0, 0, 0, 0]`.
     1. If |options|.{{MLConvTranspose2dOptions/strides}} is `undefined`, set it to `[1, 1]`.
+    1. Else if |options|.{{MLConv2dOptions/strides}}.size() is not `2`, then throw a "{{TypeError}}" {{DOMException}} and stop.
+    1. If any element in |options|.{{MLConv2dOptions/strides}} is equal to 0, then throw a "{{TypeError}}" {{DOMException}} and stop.
     1. If |options|.{{MLConvTranspose2dOptions/dilations}} is `undefined`, set it to `[1, 1]`.
     1. If |options|.{{MLConvTranspose2dOptions/outputPadding}} is `undefined`, set it to `[0, 0]`.
     1. If |options|.{{MLConvTranspose2dOptions/autoPad}} is `undefined`, set it to `"explicit"`.