Disable SearchSuggestions in incognito mode

 Bug: 3336558

Change-Id: Ie88eddee0f4931a206ba45cec708cdbb69cce008
diff --git a/src/com/android/browser/BaseUi.java b/src/com/android/browser/BaseUi.java
index 20652cf..5deb335 100644
--- a/src/com/android/browser/BaseUi.java
+++ b/src/com/android/browser/BaseUi.java
@@ -221,6 +221,9 @@
         setShouldShowErrorConsole(tab, mUiController.shouldShowErrorConsole());
         onTabDataChanged(tab);
         onProgressChanged(tab);
+        boolean incognito = mActiveTab.getWebView().isPrivateBrowsingEnabled();
+        getEmbeddedTitleBar().setIncognitoMode(incognito);
+        getFakeTitleBar().setIncognitoMode(incognito);
     }
 
     Tab getActiveTab() {