Propagate incognito mode to child tab

    Bug: http://b/issue?id=3234294
    add parent tab parameter to open tab method
    inherit parent's private browsing status
    remove one unnecessary openTab signature

Change-Id: I4edf002798d8bbdf4cafa58e5b5b442e74d5cb28
diff --git a/src/com/android/browser/UrlHandler.java b/src/com/android/browser/UrlHandler.java
index 52945b3..37c90a6 100644
--- a/src/com/android/browser/UrlHandler.java
+++ b/src/com/android/browser/UrlHandler.java
@@ -50,7 +50,7 @@
         mActivity = mController.getActivity();
     }
 
-    boolean shouldOverrideUrlLoading(WebView view, String url) {
+    boolean shouldOverrideUrlLoading(Tab tab, WebView view, String url) {
         if (view.isPrivateBrowsingEnabled()) {
             // Don't allow urls to leave the browser app when in
             // private browsing mode
@@ -156,7 +156,7 @@
         }
 
         if (mController.isMenuDown()) {
-            mController.openTab(url, false);
+            mController.openTab(tab, url, false);
             mActivity.closeOptionsMenu();
             return true;
         }