New settings preference to swipe bottom for notification

Add new gesture toggle at:
Settings > System > Gesture > Swipe for notification

Bug: 154080211
Test: manual check Settings > System > Gesture > Swipe for notifications
Test: manual check it is disabled after One-handed mode toggled on
Test: make RunSettingsRoboTests ROBOTEST_FILTER=\
"SwipeBottomToNotificationSettingsTest"
Test: make RunSettingsRoboTests ROBOTEST_FILTER=\
"SwipeBottomToNotificationPreferenceControllerTest"

Change-Id: Iec18dfd323981ae7489d142b79c6035f3499eb91

src/com/android/settings/gestures/SwipeBottomToNotificationSettings.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.gestures;
+
+import android.app.settings.SettingsEnums;
+import android.content.Context;
+
+import com.android.settings.R;
+import com.android.settings.dashboard.DashboardFragment;
+import com.android.settings.search.BaseSearchIndexProvider;
+
+/**
+ * The Fragment for swipe bottom to notification gesture settings.
+ */
+public class SwipeBottomToNotificationSettings extends DashboardFragment {
+
+    private static final String TAG = "SwipeBottomToNotificationSettings";
+
+    @Override
+    public int getMetricsCategory() {
+        return SettingsEnums.SETTINGS_SWIPE_BOTTOM_TO_NOTIFICATION;
+    }
+
+    @Override
+    protected String getLogTag() {
+        return TAG;
+    }
+
+    @Override
+    protected int getPreferenceScreenResId() {
+        return R.xml.swipe_bottom_to_notification_settings;
+    }
+
+    public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
+            new BaseSearchIndexProvider(R.xml.swipe_bottom_to_notification_settings) {
+
+                @Override
+                protected boolean isPageSearchEnabled(Context context) {
+                    return SwipeBottomToNotificationPreferenceController
+                            .isGestureAvailable(context);
+                }
+            };
+}