Move widget related listeners to widget picker data provider

The change listener on popup provider was for listening to widget
updates. With the widget now updated in widgets picker data provider,
 this moves over the listeners to it.

Test: Existing tests
Flag: EXEMPT minor refactoring
Bug: 353347512
Change-Id: I163529d207ea65044f8e3d6e77e87e0e674b82be

src/com/android/launcher3/widget/BaseWidgetSheet.java

@@ -45,13 +45,13 @@ import com.android.launcher3.Launcher;
 import com.android.launcher3.PendingAddItemInfo;
 import com.android.launcher3.R;
 import com.android.launcher3.model.WidgetItem;
-import com.android.launcher3.popup.PopupDataProvider;
 import com.android.launcher3.testing.TestLogging;
 import com.android.launcher3.testing.shared.TestProtocol;
 import com.android.launcher3.util.SystemUiController;
 import com.android.launcher3.util.Themes;
 import com.android.launcher3.util.window.WindowManagerProxy;
 import com.android.launcher3.views.AbstractSlideInView;
+import com.android.launcher3.widget.picker.model.WidgetPickerDataProvider.WidgetPickerDataChangeListener;
 
 import java.util.concurrent.atomic.AtomicBoolean;
 
@@ -60,7 +60,7 @@ import java.util.concurrent.atomic.AtomicBoolean;
  */
 public abstract class BaseWidgetSheet extends AbstractSlideInView<BaseActivity>
         implements OnClickListener, OnLongClickListener,
-        PopupDataProvider.PopupDataChangeListener, Insettable, OnDeviceProfileChangeListener {
+        WidgetPickerDataChangeListener, Insettable, OnDeviceProfileChangeListener {
     /** The default number of cells that can fit horizontally in a widget sheet. */
     public static final int DEFAULT_MAX_HORIZONTAL_SPANS = 4;
 
@@ -106,14 +106,14 @@ public abstract class BaseWidgetSheet extends AbstractSlideInView<BaseActivity>
         WindowInsets windowInsets = WindowManagerProxy.INSTANCE.get(getContext())
                 .normalizeWindowInsets(getContext(), getRootWindowInsets(), new Rect());
         mNavBarScrimHeight = getNavBarScrimHeight(windowInsets);
-        mActivityContext.getPopupDataProvider().setChangeListener(this);
+        mActivityContext.getWidgetPickerDataProvider().setChangeListener(this);
         mActivityContext.addOnDeviceProfileChangeListener(this);
     }
 
     @Override
     protected void onDetachedFromWindow() {
         super.onDetachedFromWindow();
-        mActivityContext.getPopupDataProvider().setChangeListener(null);
+        mActivityContext.getWidgetPickerDataProvider().setChangeListener(null);
         mActivityContext.removeOnDeviceProfileChangeListener(this);
     }