Handle AppSearch in plugin

+ Use AppSearchPipeline as a fallback if plugin times out

Bug: 166058597
Test: Manual
Change-Id: I96a38e412fd08f47475d2bc37bff34b86538ea12

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

@@ -33,7 +33,7 @@ public class DefaultAppSearchAlgorithm implements SearchAlgorithm {
 
     public DefaultAppSearchAlgorithm(Context context, LauncherAppState launcherAppState) {
         mResultHandler = new Handler();
-        mAppsSearchPipeline = new AppsSearchPipeline(context, launcherAppState, false);
+        mAppsSearchPipeline = new AppsSearchPipeline(context, launcherAppState);
     }
 
     @Override