Updated typings (#817)

Co-authored-by: Tim Brust <[email protected]>
Co-authored-by: Mark <[email protected]>

types/index.d.ts

@@ -8,7 +8,12 @@
 // TypeScript Version: 2.3
 type channel = "loadstart" | "loadstop" | "loaderror" | "exit" | "message" | "customscheme";
 
-interface Window {
+/**
+ * The object returned from a call to cordova.InAppBrowser.open.
+ * NOTE: The InAppBrowser window behaves like a standard web browser, and can't access Cordova APIs.
+ */
+interface InAppBrowser {
+
     /**
      * Opens a URL in a new InAppBrowser instance, the current browser instance, or the system browser.
      * @param  url     The URL to load.
@@ -18,13 +23,7 @@ interface Window {
      *                 name/value pairs must be separated by a comma. Feature names are case insensitive.
      */
     open(url: string, target?: string, options?: string): InAppBrowser;
-}
 
-/**
- * The object returned from a call to window.open.
- * NOTE: The InAppBrowser window behaves like a standard web browser, and can't access Cordova APIs.
- */
-interface InAppBrowser extends Window {
     onloadstart(type: Event): void;
     onloadstop(type: InAppBrowserEvent): void;
     onloaderror(type: InAppBrowserEvent): void;