Refactor allapps.search package to depend on ActivityContext.

Test: Manual
Bug: 216683257
Change-Id: I6230498b24380b37531f8a83db1dc768270e708a

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

@@ -32,7 +32,6 @@ import android.view.KeyEvent;
 import android.view.View;
 import android.view.ViewGroup.MarginLayoutParams;
 
-import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.ExtendedEditText;
 import com.android.launcher3.Insettable;
@@ -43,6 +42,7 @@ import com.android.launcher3.allapps.AlphabeticalAppsList;
 import com.android.launcher3.allapps.BaseAllAppsAdapter.AdapterItem;
 import com.android.launcher3.allapps.SearchUiManager;
 import com.android.launcher3.search.SearchCallback;
+import com.android.launcher3.views.ActivityContext;
 
 import java.util.ArrayList;
 
@@ -53,7 +53,7 @@ public class AppsSearchContainerLayout extends ExtendedEditText
         implements SearchUiManager, SearchCallback<AdapterItem>,
         AllAppsStore.OnUpdateListener, Insettable {
 
-    private final BaseDraggingActivity mLauncher;
+    private final ActivityContext mLauncher;
     private final AllAppsSearchBarController mSearchBarController;
     private final SpannableStringBuilder mSearchQueryBuilder;
 
@@ -74,7 +74,7 @@ public class AppsSearchContainerLayout extends ExtendedEditText
     public AppsSearchContainerLayout(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
 
-        mLauncher = BaseDraggingActivity.fromContext(context);
+        mLauncher = ActivityContext.lookupContext(context);
         mSearchBarController = new AllAppsSearchBarController();
 
         mSearchQueryBuilder = new SpannableStringBuilder();
@@ -134,7 +134,7 @@ public class AppsSearchContainerLayout extends ExtendedEditText
         mApps = appsView.getApps();
         mAppsView = appsView;
         mSearchBarController.initialize(
-                new DefaultAppSearchAlgorithm(mLauncher),
+                new DefaultAppSearchAlgorithm(getContext()),
                 this, mLauncher, this);
     }