Fixes browser to store and read HTTP authentication credentials in the correct WebView.

Change-Id: Ib9831e7985232a5f362ef529d1aec2ee1e4fbecd
diff --git a/src/com/android/browser/BrowserActivity.java b/src/com/android/browser/BrowserActivity.java
index 84f165c..17c66c5 100644
--- a/src/com/android/browser/BrowserActivity.java
+++ b/src/com/android/browser/BrowserActivity.java
@@ -3363,7 +3363,7 @@
     public void setHttpAuthUsernamePassword(String host, String realm,
                                             String username,
                                             String password) {
-        WebView w = mTabControl.getCurrentWebView();
+        WebView w = getTopWindow();
         if (w != null) {
             w.setHttpAuthUsernamePassword(host, realm, username, password);
         }