[sql] Patch SQLite to allow control of close-time WAL checkpoint.

sql/connection.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef SQL_CONNECTION_H_
 #define SQL_CONNECTION_H_
 
 #include <stddef.h>
 #include <stdint.h>
 #include <map>
@@ skipping 508 matching lines @@
 
   friend class test::ScopedCommitHook;
   friend class test::ScopedScalarFunction;
   friend class test::ScopedMockTimeSource;
 
   FRIEND_TEST_ALL_PREFIXES(SQLConnectionTest, CollectDiagnosticInfo);
   FRIEND_TEST_ALL_PREFIXES(SQLConnectionTest, GetAppropriateMmapSize);
   FRIEND_TEST_ALL_PREFIXES(SQLConnectionTest, GetAppropriateMmapSizeAltStatus);
   FRIEND_TEST_ALL_PREFIXES(SQLConnectionTest, OnMemoryDump);
   FRIEND_TEST_ALL_PREFIXES(SQLConnectionTest, RegisterIntentToUpload);
+  FRIEND_TEST_ALL_PREFIXES(SQLiteFeaturesTest, WALNoClose);
 
   // Internal initialize function used by both Init and InitInMemory. The file
   // name is always 8 bits since we want to use the 8-bit version of
   // sqlite3_open. The string can also be sqlite's special ":memory:" string.
   //
   // |retry_flag| controls retrying the open if the error callback
   // addressed errors using RazeAndClose().
   enum Retry {
     NO_RETRY = 0,
     RETRY_ON_POISON
@@ skipping 285 matching lines @@
 
   // Stores the dump provider object when db is open.
   std::unique_ptr<ConnectionMemoryDumpProvider> memory_dump_provider_;
 
   DISALLOW_COPY_AND_ASSIGN(Connection);
 };
 
 }  // namespace sql
 
 #endif  // SQL_CONNECTION_H_