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/widget/RadioButtonPickerFragment.java

@@ -17,9 +17,6 @@
 package com.android.settings.widget;
 
 import android.content.Context;
-import android.graphics.Bitmap;
-import android.graphics.Canvas;
-import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
 import android.os.UserHandle;
@@ -70,7 +67,12 @@ public abstract class RadioButtonPickerFragment extends InstrumentedPreferenceFr
     @Override
     public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
         super.onCreatePreferences(savedInstanceState, rootKey);
-        addPreferencesFromResource(R.xml.placeholder_prefs);
+        final int resId = getPreferenceScreenResId();
+        if (usePreferenceScreenTitle() && resId > 0) {
+            addPreferencesFromResource(resId);
+        } else {
+            addPreferencesFromResource(R.xml.placeholder_prefs);
+        }
         updateCandidates();
     }
 
@@ -113,6 +115,13 @@ public abstract class RadioButtonPickerFragment extends InstrumentedPreferenceFr
         onSelectionPerformed(success);
     }
 
+    /**
+     * Get the res id for static preference xml for this fragment.
+     */
+    protected int getPreferenceScreenResId() {
+        return -1;
+    }
+
     /**
      * A chance for subclasses to bind additional things to the preference.
      */