[BrowserEngineKit] Improve API a bit by making a few methods async. (#21236)

Author: rolfbjarne

src/browserenginekit.cs

@@ -231,6 +231,7 @@ interface BEWebContentProcess
 	{
 		[Static]
 		[Export ("webContentProcessWithInterruptionHandler:completion:")]
+		[Async]
 		void Create (Action interruptionHandler, BEWebContentProcessCreateCallback completion);
 
 		[Export ("invalidate")]
@@ -265,6 +266,7 @@ interface BENetworkingProcess
 	{
 		[Static]
 		[Export ("networkProcessWithInterruptionHandler:completion:")]
+		[Async]
 		void Create (Action interruptionHandler, BENetworkingProcessCreateCallback completion);
 
 		[Export ("invalidate")]
@@ -296,6 +298,7 @@ interface BERenderingProcess
 	{
 		[Static]
 		[Export ("renderingProcessWithInterruptionHandler:completion:")]
+		[Async]
 		void Create (Action interruptionHandler, BERenderingProcessCreateCallback completion);
 
 		[Export ("invalidate")]

tests/cecil-tests/Documentation.KnownFailures.txt

@@ -28622,6 +28622,7 @@ M:BrowserEngineKit.BEMediaEnvironment.CreateXpcRepresentation
 M:BrowserEngineKit.BEMediaEnvironment.MakeCaptureSession(Foundation.NSError@)
 M:BrowserEngineKit.BEMediaEnvironment.Suspend(Foundation.NSError@)
 M:BrowserEngineKit.BENetworkingProcess.Create(System.Action,BrowserEngineKit.BENetworkingProcessCreateCallback)
+M:BrowserEngineKit.BENetworkingProcess.CreateAsync(System.Action)
 M:BrowserEngineKit.BENetworkingProcess.GrantCapability(BrowserEngineKit.BEProcessCapability,Foundation.NSError@,System.Action)
 M:BrowserEngineKit.BENetworkingProcess.GrantCapability(BrowserEngineKit.BEProcessCapability,Foundation.NSError@)
 M:BrowserEngineKit.BENetworkingProcess.Invalidate
@@ -28632,6 +28633,7 @@ M:BrowserEngineKit.BEProcessCapability.CreateMediaPlaybackAndCaptureProcess(Brow
 M:BrowserEngineKit.BEProcessCapability.CreateSuspended
 M:BrowserEngineKit.BEProcessCapability.Request(Foundation.NSError@)
 M:BrowserEngineKit.BERenderingProcess.Create(System.Action,BrowserEngineKit.BERenderingProcessCreateCallback)
+M:BrowserEngineKit.BERenderingProcess.CreateAsync(System.Action)
 M:BrowserEngineKit.BERenderingProcess.CreateVisibilityPropagationInteraction
 M:BrowserEngineKit.BERenderingProcess.GrantCapability(BrowserEngineKit.BEProcessCapability,Foundation.NSError@,System.Action)
 M:BrowserEngineKit.BERenderingProcess.GrantCapability(BrowserEngineKit.BEProcessCapability,Foundation.NSError@)
@@ -28672,6 +28674,7 @@ M:BrowserEngineKit.BETextInteractionDelegate.SystemWillChangeSelection(BrowserEn
 M:BrowserEngineKit.BETextSuggestion.#ctor(System.String)
 M:BrowserEngineKit.BEWebAppManifest.#ctor(Foundation.NSData,Foundation.NSUrl)
 M:BrowserEngineKit.BEWebContentProcess.Create(System.Action,BrowserEngineKit.BEWebContentProcessCreateCallback)
+M:BrowserEngineKit.BEWebContentProcess.CreateAsync(System.Action)
 M:BrowserEngineKit.BEWebContentProcess.CreateVisibilityPropagationInteraction
 M:BrowserEngineKit.BEWebContentProcess.GrantCapability(BrowserEngineKit.BEProcessCapability,Foundation.NSError@,System.Action)
 M:BrowserEngineKit.BEWebContentProcess.GrantCapability(BrowserEngineKit.BEProcessCapability,Foundation.NSError@)