Core - Fix some exception messages

Author: amaitland

CefSharp/AsyncExtensions.cs

@@ -26,12 +26,12 @@ public static Task<int> DeleteCookiesAsync(this ICookieManager cookieManager, st
         {
             if (cookieManager == null)
             {
-                throw new NullReferenceException("cookieManager");
+                throw new ArgumentNullException(nameof(cookieManager));
             }
 
             if (cookieManager.IsDisposed)
             {
-                throw new ObjectDisposedException("cookieManager");
+                throw new ObjectDisposedException("CookieManager");
             }
 
             var callback = new TaskDeleteCookiesCallback();
@@ -58,12 +58,12 @@ public static Task<bool> SetCookieAsync(this ICookieManager cookieManager, strin
         {
             if (cookieManager == null)
             {
-                throw new NullReferenceException("cookieManager");
+                throw new ArgumentNullException(nameof(cookieManager));
             }
 
             if (cookieManager.IsDisposed)
             {
-                throw new ObjectDisposedException("cookieManager");
+                throw new ObjectDisposedException("CookieManager");
             }
 
             var callback = new TaskSetCookieCallback();

CefSharp/Internals/Partial/ChromiumWebBrowser.Partial.cs

@@ -528,7 +528,7 @@ private void ThrowExceptionIfDisposed()
         {
             if (IsDisposed)
             {
-                throw new ObjectDisposedException("browser", "Browser has been disposed");
+                throw new ObjectDisposedException("ChromiumWebBrowser");
             }
         }
     }