Core - Add IChromiumWebBrowserBase.GetRequestContext extension method

Simplifies getting the RequestContext for a ChromiumWebBrowser instance

Author: amaitland

CefSharp.WinForms.Example/BrowserForm.cs

@@ -570,7 +570,7 @@ private void LoadExtensionsToolStripMenuItemClick(object sender, EventArgs e)
                 //The sample extension only works for http(s) schemes
                 if (control.Browser.GetMainFrame().Url.StartsWith("http"))
                 {
-                    var requestContext = control.Browser.GetBrowserHost().RequestContext;
+                    var requestContext = control.Browser.GetRequestContext();
 
                     const string cefSharpExampleResourcesFolder =
 #if !NETCOREAPP

CefSharp.WinForms.Example/BrowserTabUserControl.cs

@@ -309,9 +309,7 @@ private void SetIsLoading(bool isLoading)
 
         private void OnIsBrowserInitializedChanged(object sender, EventArgs e)
         {
-            //Get the underlying browser host wrapper
-            var browserHost = Browser.BrowserCore.GetHost();
-            var requestContext = browserHost.RequestContext;
+            var requestContext = Browser.GetRequestContext();
             string errorMessage;
             // Browser must be initialized before getting/setting preferences
             var success = requestContext.SetPreference("enable_do_not_track", true, out errorMessage);

CefSharp/WebBrowserExtensions.cs

@@ -893,6 +893,23 @@ public static ICookieManager GetCookieManager(this IChromiumWebBrowserBase brows
             return requestContext.GetCookieManager(callback);
         }
 
+        /// <summary>
+        /// Gets the RequestContext associated with the <see cref="IChromiumWebBrowserBase"/> instance.
+        /// </summary>
+        /// <exception cref="Exception">Thrown when an exception error condition occurs.</exception>
+        /// <param name="browser">The ChromiumWebBrowser instance this method extends.</param>
+        /// <returns>
+        /// RequestContext
+        /// </returns>
+        public static IRequestContext GetRequestContext(this IChromiumWebBrowserBase browser)
+        {
+            var host = browser.GetBrowserHost();
+
+            ThrowExceptionIfBrowserHostNull(host);
+
+            return host.RequestContext;
+        }
+
         /// <summary>
         /// Asynchronously gets the current Zoom Level.
         /// </summary>