include: Add windows.ui.composition.idl file.

Needed for mingw Firefox build.

include/Makefile.in

@@ -837,6 +837,7 @@ SOURCES = \
 	windows.system.profile.systemmanufacturers.idl \
 	windows.system.threading.idl \
 	windows.system.userprofile.idl \
+	windows.ui.composition.idl \
 	windows.ui.core.idl \
 	windows.ui.idl \
 	windows.ui.viewmanagement.idl \

include/windows.ui.composition.idl

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2023 Mohamad Al-Jaf
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#ifdef __WIDL__
+#pragma winrt ns_prefix
+#endif
+
+import "inspectable.idl";
+import "asyncinfo.idl";
+import "eventtoken.idl";
+import "windowscontracts.idl";
+import "windows.foundation.idl";
+import "windows.foundation.numerics.idl";
+/* import "windows.graphics.idl"; */
+import "windows.graphics.directx.idl";
+import "windows.graphics.effects.idl";
+import "windows.system.idl";
+import "windows.ui.idl";
+import "windows.ui.core.idl";
+
+namespace Windows.UI.Composition {
+    interface ICompositionEasingFunction;
+    interface ICompositionEasingFunctionFactory;
+    interface ICompositionEasingFunctionStatics;
+
+    runtimeclass CompositionEasingFunction;
+    runtimeclass CompositionObject;
+
+    [
+        contract(Windows.Foundation.UniversalApiContract, 2.0),
+        exclusiveto(Windows.UI.Composition.CompositionEasingFunction),
+        uuid(5145e356-bf79-4ea8-8cc2-6b5b472e6c9a)
+    ]
+    interface ICompositionEasingFunction : IInspectable
+    {
+    }
+
+    [
+        contract(Windows.Foundation.UniversalApiContract, 2.0),
+        exclusiveto(Windows.UI.Composition.CompositionEasingFunction),
+        uuid(60840774-3da0-4949-8200-7206c00190a0)
+    ]
+    interface ICompositionEasingFunctionFactory : IInspectable
+    {
+    }
+
+    [
+        composable(Windows.UI.Composition.ICompositionEasingFunctionFactory, public, Windows.Foundation.UniversalApiContract, 2.0),
+        contract(Windows.Foundation.UniversalApiContract, 2.0),
+        marshaling_behavior(agile),
+        static(Windows.UI.Composition.ICompositionEasingFunctionStatics, Windows.Foundation.UniversalApiContract, 12.0),
+        threading(both)
+    ]
+    runtimeclass CompositionEasingFunction : Windows.UI.Composition.CompositionObject
+    {
+        [default] interface Windows.UI.Composition.ICompositionEasingFunction;
+    }
+}