Set user agent setting when toggling debug

 Bug: 3382700
 Set the user agent when debug mode is toggled

Change-Id: Ide167c7bb32c4f20e6b5965116fbcce01bb1e599
diff --git a/src/com/android/browser/IntentHandler.java b/src/com/android/browser/IntentHandler.java
index 9c50975..e17fdc5 100644
--- a/src/com/android/browser/IntentHandler.java
+++ b/src/com/android/browser/IntentHandler.java
@@ -179,7 +179,7 @@
                     } else if ("about:debug.nav".equals(urlData.mUrl)) {
                         current.getWebView().debugDump();
                     } else {
-                        mSettings.toggleDebugSettings();
+                        mSettings.toggleDebugSettings(mActivity);
                     }
                     return;
                 }