Make SQLiteDatabase final.

The SQLiteDatabase constructor is inaccessible so it is not
possible for applications to subclass it.  To remove all possible
remaining temptation to do so, make the class final.

Change-Id: I4148e9b06f0661ec22aab8e45afde38498d2375a
diff --git a/core/java/android/database/sqlite/SQLiteDirectCursorDriver.java b/core/java/android/database/sqlite/SQLiteDirectCursorDriver.java
index 3375e74..294edc4 100644
--- a/core/java/android/database/sqlite/SQLiteDirectCursorDriver.java
+++ b/core/java/android/database/sqlite/SQLiteDirectCursorDriver.java
@@ -25,7 +25,7 @@
  * 
  * @hide
  */
-public class SQLiteDirectCursorDriver implements SQLiteCursorDriver {
+public final class SQLiteDirectCursorDriver implements SQLiteCursorDriver {
     private final SQLiteDatabase mDatabase;
     private final String mEditTable; 
     private final String mSql;