Core - Change from using GetBrowser() method to BrowserHost

- BrowserHost will return null if not set where GetBrowser() will throw an exception

CefSharp.WinForms/WebBrowserExtensions.cs

@@ -47,7 +47,7 @@ namespace CefSharp.WinForms
                 return false;
             }
 
-            var browser = chromiumWebBrowser.GetBrowser();
+            var browser = chromiumWebBrowser.BrowserCore;
 
             if (browser == null)
             {

CefSharp.Wpf.Example/Controls/ChromiumWebBrowserWithScreenshotSupport.cs

@@ -61,7 +61,7 @@ namespace CefSharp.Wpf.Example.Controls
                 throw new Exception("Unable to take screenshot while browser is loading");
             }
 
-            var browserHost = this.GetBrowser().GetHost();
+            var browserHost = this.GetBrowserHost();
 
             if (browserHost == null)
             {

CefSharp.Wpf.Example/MainWindow.xaml.cs

@@ -181,7 +181,7 @@ namespace CefSharp.Wpf.Example
                             GetActiveBrowser = (extension, isIncognito) =>
                             {
                                 //Return the active browser for which the extension will act upon
-                                return browser.GetBrowser();
+                                return browser.BrowserCore;
                             }
                         };
 

CefSharp.Wpf/Internals/WpfKeyboardHandler.cs

@@ -31,7 +31,7 @@ namespace CefSharp.Wpf.Internals
 
         public virtual void HandleKeyPress(KeyEventArgs e)
         {
-            var browser = owner.GetBrowser();
+            var browser = owner.BrowserCore;
             var key = e.SystemKey == Key.None ? e.Key : e.SystemKey;
             if (browser != null)
             {
@@ -92,7 +92,7 @@ namespace CefSharp.Wpf.Internals
 
         public virtual void HandleTextInput(TextCompositionEventArgs e)
         {
-            var browser = owner.GetBrowser();
+            var browser = owner.BrowserCore;
             if (browser != null)
             {
                 var browserHost = browser.GetHost();

CefSharp.Wpf/Internals/WpfLegacyKeyboardHandler.cs

@@ -90,7 +90,7 @@ namespace CefSharp.Wpf.Internals
                         return IntPtr.Zero;
                     }
 
-                    var browser = owner.GetBrowser();
+                    var browser = owner.BrowserCore;
                     if (browser != null)
                     {
                         browser.GetHost().SendKeyEvent(message, wParam.CastToInt32(), lParam.CastToInt32());
@@ -118,7 +118,7 @@ namespace CefSharp.Wpf.Internals
                 var modifiers = e.GetModifiers();
                 var message = (int)(e.IsDown ? WM.KEYDOWN : WM.KEYUP);
                 var virtualKey = KeyInterop.VirtualKeyFromKey(e.Key);
-                var browser = owner.GetBrowser();
+                var browser = owner.BrowserCore;
 
                 if (browser != null)
                 {