refactor open tab code

Change-Id: Ibcffa5a55b2b7dcf56174f9dd916a565b31506e9
diff --git a/src/com/android/browser/UiController.java b/src/com/android/browser/UiController.java
index 9b75aca..9f85547 100644
--- a/src/com/android/browser/UiController.java
+++ b/src/com/android/browser/UiController.java
@@ -42,9 +42,8 @@
 
     Tab openTabToHomePage();
 
-    Tab openIncognitoTab();
-
-    Tab createNewTab(String url, boolean incognito);
+    Tab openTab(String url, boolean incognito, boolean setActive,
+            boolean useCurrent);
 
     void setActiveTab(Tab tab);