Unify the caption preference class naming

Bug: 197695932
Test: make RunSettingsRoboTests
Change-Id: Ice244442ad21e6d9f006d488992e9f58cf5c8fb0

src/com/android/settings/accessibility/CaptioningFooterPreferenceController.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2021 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.accessibility;
+
+import android.content.Context;
+
+import com.android.settings.R;
+
+/** Preference controller for captioning footer. */
+public class CaptioningFooterPreferenceController extends AccessibilityFooterPreferenceController {
+
+    public CaptioningFooterPreferenceController(Context context, String key) {
+        super(context, key);
+    }
+
+    @Override
+    protected String getLearnMoreText() {
+        return mContext.getString(
+            R.string.accessibility_captioning_footer_learn_more_content_description);
+    }
+
+    @Override
+    protected String getIntroductionTitle() {
+        return mContext.getString(R.string.accessibility_captioning_about_title);
+    }
+
+    @Override
+    protected int getHelpResource() {
+        return R.string.help_url_caption;
+    }
+}