Launch first search item on enter

src/com/android/launcher3/ExtendedEditText.java

@@ -101,6 +101,7 @@ public class ExtendedEditText extends EditText {
 
     // inherited class can override to change the appearance of the edit text.
     public void show() {}
+    public void hide() {}
 
     public void showKeyboard() {
         mShowImeAfterFirstLayout = !showSoftInput();