move subwindow handling to UI

     added sub view creation to WebViewFactory
     removed WebView from subview layout
     use WebVIewFactory for creating the SubWebView
     moved layout/view related code to UI

Change-Id: Id5b1905e4c36814fe7cc047cbd97128235d7e65e
diff --git a/src/com/android/browser/Controller.java b/src/com/android/browser/Controller.java
index 9f9b451..e0b15b4 100644
--- a/src/com/android/browser/Controller.java
+++ b/src/com/android/browser/Controller.java
@@ -306,11 +306,22 @@
         mFactory = factory;
     }
 
-    WebViewFactory getWebViewFactory() {
+    @Override
+    public WebViewFactory getWebViewFactory() {
         return mFactory;
     }
 
     @Override
+    public void createSubWindow(Tab tab) {
+        endActionMode();
+        WebView mainView = tab.getWebView();
+        WebView subView = mFactory.createWebView((mainView == null)
+                ? false
+                : mainView.isPrivateBrowsingEnabled());
+        mUi.createSubWindow(tab, subView);
+    }
+
+    @Override
     public Activity getActivity() {
         return mActivity;
     }