Disable recovery test for USE_SYSTEM_SQLITE.

sql/recovery.h

Index: sql/recovery.h
diff --git a/sql/recovery.h b/sql/recovery.h
index e832da600147004cbcc5cb80d06db04cc977695a..be23e97a76b20c70e0820c92d16a3337cca84d19 100644
--- a/sql/recovery.h
+++ b/sql/recovery.h
@@ -41,6 +41,15 @@ class SQL_EXPORT Recovery {
  public:
   ~Recovery();
 
+  // This module is intended to be used in concert with a virtual
+  // table module (see third_party/sqlite/src/src/recover.c).  If the
+  // build defines USE_SYSTEM_SQLITE, this module will not be present.
+  // TODO(shess): I am still debating how to handle this - perhaps it
+  // will just imply Unrecoverable().  This is exposed to allow tests
+  // to adapt to the cases, please do not rely on it in production
+  // code.
+  static bool FullRecoverySupported();
+
   // Begin the recovery process by opening a temporary database handle
   // and attach the existing database to it at "corrupt".  To prevent
   // deadlock, all transactions on |connection| are rolled back.