Make SQLiteDebug @TestApi

Otherwise, Metalava based android_test_current.jar doesn't contain
SQLiteDebug.class which caused build failure on:
out/target/common/obj/APPS/CtsDatabaseTestCases_intermediates/classes-full-debug.jar

Test: CtsDatabaseTestCases
Bug: 77543575
Change-Id: Ied9948e962fb7a81e56be0360cb94b0c318ad14d
Merged-In: Ied9948e962fb7a81e56be0360cb94b0c318ad14d
(cherry-picked from 6fe565e441e16ed42c0e6357464f9484631421ab)
Exempt-From-Owner-Approval: Cherry-picked a CL from git_master, and owner just agreed to use Exempt-From tag.
diff --git a/api/test-current.txt b/api/test-current.txt
index 8073341..634293a 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -294,6 +294,31 @@
 
 package android.database.sqlite {
 
+  public final class SQLiteDebug {
+    method public static void dump(android.util.Printer, java.lang.String[]);
+    method public static android.database.sqlite.SQLiteDebug.PagerStats getDatabaseInfo();
+    field public static final boolean DEBUG_SQL_LOG;
+    field public static final boolean DEBUG_SQL_STATEMENTS;
+    field public static final boolean DEBUG_SQL_TIME;
+  }
+
+  public static class SQLiteDebug.DbStats {
+    ctor public SQLiteDebug.DbStats(java.lang.String, long, long, int, int, int, int);
+    field public java.lang.String cache;
+    field public java.lang.String dbName;
+    field public long dbSize;
+    field public int lookaside;
+    field public long pageSize;
+  }
+
+  public static class SQLiteDebug.PagerStats {
+    ctor public SQLiteDebug.PagerStats();
+    field public java.util.ArrayList<android.database.sqlite.SQLiteDebug.DbStats> dbStats;
+    field public int largestMemAlloc;
+    field public int memoryUsed;
+    field public int pageCacheOverflow;
+  }
+
   public final class SQLiteDirectCursorDriver implements android.database.sqlite.SQLiteCursorDriver {
     ctor public SQLiteDirectCursorDriver(android.database.sqlite.SQLiteDatabase, java.lang.String, java.lang.String, android.os.CancellationSignal);
     method public void cursorClosed();
diff --git a/core/java/android/database/sqlite/SQLiteDebug.java b/core/java/android/database/sqlite/SQLiteDebug.java
index a921aa3..d392521 100644
--- a/core/java/android/database/sqlite/SQLiteDebug.java
+++ b/core/java/android/database/sqlite/SQLiteDebug.java
@@ -29,6 +29,7 @@
  *
  * {@hide}
  */
+@TestApi
 public final class SQLiteDebug {
     private static native void nativeGetPagerStats(PagerStats stats);