Theme hierarchy refactoring.

Force dark theme for media send activity.

src/org/thoughtcrime/securesms/BaseActionBarActivity.java

@@ -32,7 +32,6 @@ import java.util.Date;
 
 import network.loki.messenger.R;
 
-
 public abstract class BaseActionBarActivity extends AppCompatActivity {
   private static final String TAG = BaseActionBarActivity.class.getSimpleName();
   private BroadcastReceiver broadcastReceiver;

src/org/thoughtcrime/securesms/mediasend/MediaSendFragment.java

@@ -129,8 +129,9 @@ public class MediaSendFragment extends Fragment implements ViewTreeObserver.OnGl
 
   @Override
   public @Nullable View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
-    return ThemeUtil.getThemedInflater(requireActivity(), inflater, R.style.TextSecure_DarkTheme)
-                    .inflate(R.layout.mediasend_fragment, container, false);
+//    return ThemeUtil.getThemedInflater(requireActivity(), inflater, R.style.TextSecure_DarkTheme)
+//                    .inflate(R.layout.mediasend_fragment, container, false);
+    return inflater.inflate(R.layout.mediasend_fragment, container, false);
   }
 
   @Override

src/org/thoughtcrime/securesms/util/DynamicNoActionBarTheme.java

@@ -7,6 +7,6 @@ import network.loki.messenger.R;
 public class DynamicNoActionBarTheme extends DynamicTheme {
   @Override
   protected int getSelectedTheme(Activity activity) {
-    return R.style.TextSecure_DarkNoActionBar;
+    return R.style.Theme_TextSecure_DayNight_NoActionBar;
   }
 }

src/org/thoughtcrime/securesms/util/DynamicTheme.java

@@ -28,7 +28,8 @@ public class DynamicTheme {
   }
 
   protected int getSelectedTheme(Activity activity) {
-    return R.style.TextSecure_DarkTheme;
+    // For all legacy (Signal) activities we lock on to the Signal dedicated theme.
+    return R.style.Theme_TextSecure_DayNight;
   }
 
   private static final class OverridePendingTransition {