WinForms Example - Set BrowserTabUserControl Bounds on creation to create browser at final size

Previously the ChromiumWebBrowser instance was created smaller and resized to fill, this would
show a black region that's resized.
Set the initial Bounds to improve the sizing

Author: amaitland

CefSharp.WinForms.Example/BrowserForm.cs

@@ -89,6 +89,7 @@ private void AddTab(string url, int? insertIndex = null)
             var browser = new BrowserTabUserControl(AddTab, url, multiThreadedMessageLoopEnabled)
             {
                 Dock = DockStyle.Fill,
+                Bounds = browserTabControl.Bounds
             };
 
             var tabPage = new TabPage(url)