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

third_party/sqlite/amalgamation/sqlite3.h

Index: third_party/sqlite/amalgamation/sqlite3.h
diff --git a/third_party/sqlite/amalgamation/sqlite3.h b/third_party/sqlite/amalgamation/sqlite3.h
index 0d427902d70da466e21174bdb79a3cde64331c6a..4ee2ee40a5dfdf9df1fabcb29dbc109556168309 100644
--- a/third_party/sqlite/amalgamation/sqlite3.h
+++ b/third_party/sqlite/amalgamation/sqlite3.h
@@ -6477,3 +6477,18 @@ struct sqlite3_rtree_geometry {
 
 #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