Change scope on SettingsProvider.mDatabaseHelper and DatabaseHelper

This change will allow the DatabaseHelper to be inheritted and extended
without the need to make futher changes to the existing implementation.

packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java

@@ -55,7 +55,7 @@ import java.util.List;
  * Database helper class for {@link SettingsProvider}.
  * Mostly just has a bit {@link #onCreate} to initialize the database.
  */
-class DatabaseHelper extends SQLiteOpenHelper {
+public class DatabaseHelper extends SQLiteOpenHelper {
     /**
      * Path to file containing default bookmarks, relative to ANDROID_ROOT.
      */

packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java

@@ -40,7 +40,7 @@ public class SettingsProvider extends ContentProvider {
     private static final String TAG = "SettingsProvider";
     private static final boolean LOCAL_LOGV = false;
 
-    private DatabaseHelper mOpenHelper;
+    protected DatabaseHelper mOpenHelper;
 
     /**
      * Decode a content URL into the table, projection, and arguments