CB-10040 - re-fix: backwards compatible with cordova-ios < 4.0

src/ios/CDVInAppBrowser.m

@@ -232,10 +232,17 @@
 - (void)openInCordovaWebView:(NSURL*)url withOptions:(NSString*)options
 {
     NSURLRequest* request = [NSURLRequest requestWithURL:url];
+
 #ifdef __CORDOVA_4_0_0
+    // the webview engine itself will filter for this according to <allow-navigation> policy
+    // in config.xml for cordova-ios-4.0
     [self.webViewEngine loadRequest:request];
 #else
+    if ([self.commandDelegate URLIsWhitelisted:url]) {
         [self.webView loadRequest:request];
+    } else { // this assumes the InAppBrowser can be excepted from the white-list
+        [self openInInAppBrowser:url withOptions:options];
+    }
 #endif
 }