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/WebViewController.java b/src/com/android/browser/WebViewController.java
index 894bbec..64e97de 100644
--- a/src/com/android/browser/WebViewController.java
+++ b/src/com/android/browser/WebViewController.java
@@ -56,7 +56,7 @@
 
     void onFavicon(Tab tab, WebView view, Bitmap icon);
 
-    boolean shouldOverrideUrlLoading(WebView view, String url);
+    boolean shouldOverrideUrlLoading(Tab tab, WebView view, String url);
 
     boolean shouldOverrideKeyEvent(KeyEvent event);
 
@@ -99,7 +99,8 @@
 
     void dismissSubWindow(Tab tab);
 
-    Tab openTabAndShow(UrlData urlData, boolean closeOnExit, String appId);
+    Tab openTabAndShow(Tab parent, UrlData urlData, boolean closeOnExit,
+            String appId);
 
     boolean switchToTab(int tabindex);