Implement the psychic search engine.

(a) Add a new subclass of SearchEngine that receives
suggestions provided by psychic and displays them in the
suggestions dropdown.
(b) Add a Labs setting that can turn this feature on or
off.

Change-Id: Icae05b6b55f489278028e5af560d9b36014a0f59
diff --git a/src/com/android/browser/BaseUi.java b/src/com/android/browser/BaseUi.java
index bca999d..15f07c6 100644
--- a/src/com/android/browser/BaseUi.java
+++ b/src/com/android/browser/BaseUi.java
@@ -17,6 +17,7 @@
 package com.android.browser;
 
 import com.android.browser.Tab.LockIcon;
+import com.android.browser.UI.DropdownChangeListener;
 
 import android.animation.ObjectAnimator;
 import android.app.Activity;
@@ -690,4 +691,7 @@
         warning.show();
     }
 
+    @Override
+    public void registerDropdownChangeListener(DropdownChangeListener d) {
+    }
 }