Revert of [sqlite] sql::Recovery working under USE_SYSTEM_SQLITE.

sql/recovery_unittest.cc

Index: sql/recovery_unittest.cc
diff --git a/sql/recovery_unittest.cc b/sql/recovery_unittest.cc
index d3b04b1eb900a888cb955aa5fdfab36a83038c92..e4fdb7b189ebe0bbc9fc5aa73ae20b1e79d1a478 100644
--- a/sql/recovery_unittest.cc
+++ b/sql/recovery_unittest.cc
@@ -172,6 +172,9 @@
             ExecuteWithResults(&db(), kXSql, "|", "\n"));
 }
 
+// The recovery virtual table is only supported for Chromium's SQLite.
+#if !defined(USE_SYSTEM_SQLITE)
+
 // Test operation of the virtual table used by sql::Recovery.
 TEST_F(SQLRecoveryTest, VirtualTable) {
   const char kCreateSql[] = "CREATE TABLE x (t TEXT)";
@@ -734,6 +737,7 @@
     EXPECT_TRUE(sql::Recovery::Recovered(std::move(recovery)));
   }
 }
+#endif  // !defined(USE_SYSTEM_SQLITE)
 
 // Memory-mapped I/O interacts poorly with I/O errors.  Make sure the recovery
 // database doesn't accidentally enable it.