Removing some unnecessary interfaces and merging them to ActivityContext

Bug: 259733681
Test: Everything compiles
Change-Id: If6b530f6e589a851cf8554f5de0849843bd66dd4

tests/src/com/android/launcher3/util/ActivityContextWrapper.java

@@ -20,15 +20,21 @@ import android.content.ContextWrapper;
 import android.view.ContextThemeWrapper;
 
 import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.DeviceProfile.OnDeviceProfileChangeListener;
 import com.android.launcher3.InvariantDeviceProfile;
 import com.android.launcher3.views.ActivityContext;
 import com.android.launcher3.views.BaseDragLayer;
 
+import java.util.ArrayList;
+import java.util.List;
+
 /**
  * {@link ContextWrapper} with internal Launcher interface for testing
  */
 public class ActivityContextWrapper extends ContextThemeWrapper implements ActivityContext {
 
+    private final List<OnDeviceProfileChangeListener> mDpChangeListeners = new ArrayList<>();
+
     private final DeviceProfile mProfile;
     private final MyDragLayer mMyDragLayer;
 
@@ -43,6 +49,11 @@ public class ActivityContextWrapper extends ContextThemeWrapper implements Activ
         return mMyDragLayer;
     }
 
+    @Override
+    public List<OnDeviceProfileChangeListener> getOnDeviceProfileChangeListeners() {
+        return mDpChangeListeners;
+    }
+
     @Override
     public DeviceProfile getDeviceProfile() {
         return mProfile;