[SQLite] Hack to touch page cache to debug slow connection close.

third_party/sqlite/amalgamation/sqlite3.h

 /*
 ** 2001 September 15
 **
 ** The author disclaims copyright to this source code.  In place of
 ** a legal notice, here is a blessing:
 **
 **    May you do good and not evil.
 **    May you find forgiveness for yourself and forgive others.
 **    May you share freely, never taking more than you give.
 **
@@ skipping 6459 matching lines @@
   void (*xDelUser)(void *);       /* Called by SQLite to clean up pUser */
 };
 
 
 #ifdef __cplusplus
 }  /* end of the 'extern "C"' block */
 #endif
 
 #endif  /* ifndef _SQLITE3RTREE_H_ */
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Fault in page cache for db.  See http://crbug.com/95527 .
+** *pnTouched will accumulate the number of bytes represented by the
+** touched pages. */
+int sqlite3_95527(sqlite3 *db, unsigned int *pnTouched);
+
+/* Let our code know that it's safe to call the function. */
+#define HAS_SQLITE3_95527
+
+#ifdef __cplusplus
+}  /* end of the 'extern "C"' block */
+#endif