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/UiController.java b/src/com/android/browser/UiController.java
index 6075d36..551d0ce 100644
--- a/src/com/android/browser/UiController.java
+++ b/src/com/android/browser/UiController.java
@@ -16,6 +16,8 @@
 
 package com.android.browser;
 
+import com.android.browser.UI.DropdownChangeListener;
+
 import android.content.Intent;
 import android.webkit.WebView;
 
@@ -84,4 +86,6 @@
     void registerOptionsMenuHandler(OptionsMenuHandler handler);
 
     void unregisterOptionsMenuHandler(OptionsMenuHandler handler);
+
+    void registerDropdownChangeListener(DropdownChangeListener d);
 }