Javascript Binding - CefSharp.BindObjectAsync() never raised the ResolveObject event

Resolves #3470

Author: amaitland

CefSharp.BrowserSubprocess.Core/BindObjectAsyncHandler.h

@@ -134,7 +134,10 @@ namespace CefSharp
                                 //If the number of cached objects matches the number of args
                                 //(we have a cached copy of all requested objects)
                                 //then we'll immediately bind the cached objects
-                                if (cachedObjects->Count == objectCount && ignoreCache == false)
+                                //If objectCount and cachedObject count are both 0 then we'll
+                                //send the kJavascriptRootObjectRequest message
+                                //https://github.com/cefsharp/CefSharp/issues/3470
+                                if (objectCount > 0 && cachedObjects->Count == objectCount && ignoreCache == false)
                                 {
                                     if (Object::ReferenceEquals(_browserWrapper, nullptr))
                                     {

CefSharp.Test/JavascriptBinding/IntegrationTestFacts.cs

@@ -173,7 +173,7 @@ public async Task CanCallCefSharpBindObjectAsyncWithoutParams()
                 var evt = Assert.Raises<JavascriptBindingEventArgs>(
                     x => browser.JavascriptObjectRepository.ResolveObject += x,
                     y => browser.JavascriptObjectRepository.ResolveObject -= y,
-                    () => { browser.EvaluateScriptAsync("CefSharp.BindObjectAsync({ IgnoreCache: true });").GetAwaiter().GetResult(); });
+                    () => { browser.EvaluateScriptAsync("CefSharp.BindObjectAsync();").GetAwaiter().GetResult(); });
 
                 Assert.NotNull(evt);