Auto merge of #11214 - farodin91:windowproxy, r=jdm

Support WindowProxy return values in bindings

Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data:
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy --faster` does not report any errors
- [x] These changes fix #10965 (github issue number if applicable).

Either:
- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because _____

Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process.

<!-- Reviewable:start -->
---
This change is [<img src="https://reviewable.io/review_button.svg" height="35" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/11214)
<!-- Reviewable:end -->

1 files changed, 6 insertions, 4 deletions

diff --git a/components/script/dom/bindings/codegen/Configuration.py b/components/script/dom/bindings/codegen/Configuration.py
index 3ee7fb37e77..7aad0f75f75 100644
--- a/components/script/dom/bindings/codegen/Configuration.py
+++ b/components/script/dom/bindings/codegen/Configuration.py
@@ -173,6 +173,7 @@ class Descriptor(DescriptorProvider):
 
         # Read the desc, and fill in the relevant defaults.
         ifaceName = self.interface.identifier.name
+        typeName = desc.get('nativeType', ifaceName)
 
         # Callback types do not use JS smart pointers, so we should not use the
         # built-in rooting mechanisms for them.
@@ -184,12 +185,13 @@ class Descriptor(DescriptorProvider):
             self.nativeType = ty
         else:
             self.needsRooting = True
-            self.returnType = "Root<%s>" % ifaceName
-            self.argumentType = "&%s" % ifaceName
-            self.nativeType = "*const %s" % ifaceName
+            self.returnType = "Root<%s>" % typeName
+            self.argumentType = "&%s" % typeName
+            self.nativeType = "*const %s" % typeName
 
-        self.concreteType = ifaceName
+        self.concreteType = typeName
         self.register = desc.get('register', True)
+        self.path = desc.get('path', 'dom::types::%s' % typeName)
         self.outerObjectHook = desc.get('outerObjectHook', 'None')
         self.proxy = False
         self.weakReferenceable = desc.get('weakReferenceable', False)