Add AllAppsSearchPlugin

Bug: 151089843

Change-Id: I6d61fb9c7855bafee731f47147b3070a1b672071

src/com/android/launcher3/allapps/search/AppsSearchContainerLayout.java

@@ -33,6 +33,7 @@ import android.view.KeyEvent;
 import android.view.View;
 import android.view.ViewGroup.MarginLayoutParams;
 import android.view.animation.Interpolator;
+import android.widget.EditText;
 
 import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.DeviceProfile;
@@ -214,4 +215,9 @@ public class AppsSearchContainerLayout extends ExtendedEditText
             Interpolator interpolator) {
         setter.setViewAlpha(this, (visibleElements & ALL_APPS_HEADER) != 0 ? 1 : 0, interpolator);
     }
+
+    @Override
+    public EditText setTextSearchEnabled(boolean isEnabled) {
+        return this;
+    }
 }