unify voice search code

Change-Id: Icf1fc84405d08da8504ac91094e67c7d8d1c901d
diff --git a/src/com/android/browser/UiController.java b/src/com/android/browser/UiController.java
index 65fa5f8..c22494b 100644
--- a/src/com/android/browser/UiController.java
+++ b/src/com/android/browser/UiController.java
@@ -60,6 +60,8 @@
 
     void startVoiceSearch();
 
+    boolean supportsVoiceSearch();
+
     void showVoiceSearchResults(String title);
 
     void editUrl();