Refactor SearchAlgorithm and SearchCallback interface to work on generic search result type.

Test: Manually tested that 'All apps' search works fine
Bug: b/157286785
Change-Id: Id4b7fb133149e9211f871b46b47d5853ec0e0050

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

@@ -47,6 +47,7 @@ import com.android.launcher3.allapps.AlphabeticalAppsList;
 import com.android.launcher3.allapps.SearchUiManager;
 import com.android.launcher3.anim.PropertySetter;
 import com.android.launcher3.config.FeatureFlags;
+import com.android.launcher3.search.SearchCallback;
 
 import java.util.ArrayList;
 
@@ -54,7 +55,7 @@ import java.util.ArrayList;
  * Layout to contain the All-apps search UI.
  */
 public class AppsSearchContainerLayout extends ExtendedEditText
-        implements SearchUiManager, AllAppsSearchBarController.Callbacks,
+        implements SearchUiManager, SearchCallback<AdapterItem>,
         AllAppsStore.OnUpdateListener, Insettable {
 
     private final BaseDraggingActivity mLauncher;