Update preference screen title.

- Add missing title to preference screen xml so that they will be used to
set the activity title when the fragment is launched.
- Also updated some incorrect preference screen titles.
- Overrides getTitle() in preference fragments that do not use the
preference screen xml.

Bug: 64564191
Test: blaze-bin/screenshots/android/i18nscreenshots/i18nscreenshots
Change-Id: Id72d5ddf18f0962bc484de8bbd847a2e55d6371e

src/com/android/settings/applications/ConvertToFbe.java

@@ -15,6 +15,7 @@
  */
 package com.android.settings.applications;
 
+import android.annotation.Nullable;
 import android.app.Activity;
 import android.content.Intent;
 import android.content.res.Resources;
@@ -28,6 +29,7 @@ import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 import com.android.settings.R;
 import com.android.settings.SettingsActivity;
 import com.android.settings.core.InstrumentedFragment;
+import com.android.settings.core.InstrumentedPreferenceFragment;
 import com.android.settings.password.ChooseLockSettingsHelper;
 
 /* Class to prompt for conversion of userdata to file based encryption
@@ -44,6 +46,14 @@ public class ConvertToFbe extends InstrumentedFragment {
                                         res.getText(R.string.convert_to_file_encryption));
     }
 
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (InstrumentedPreferenceFragment.usePreferenceScreenTitle()) {
+            getActivity().setTitle(R.string.convert_to_file_encryption);
+        }
+    }
+
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                 Bundle savedInstanceState) {