[sql] Rewrite sqlite patching "system".

third_party/sqlite/fts3_85522.patch

-Fix http://crbug.com/85522
-
-WebDatabase uses an authorizer to prevent inappropriate access.
-fts3.c uses 'PRAGMA page_size' to tune the query optimizer, but PRAGMA
-is on the disallowed list.  This patch adds a default return value for
-SQLITE_AUTH failures.
-
-diff --git src/ext/fts3/fts3.c src/ext/fts3/fts3.c
-index 8498cfa..dfa3891 100644
---- src/ext/fts3/fts3.c
-+++ src/ext/fts3/fts3.c
-@@ -630,6 +630,9 @@ static void fts3DatabasePageSize(int *pRc, Fts3Table *p){
-         sqlite3_step(pStmt);
-         p->nPgsz = sqlite3_column_int(pStmt, 0);
-         rc = sqlite3_finalize(pStmt);
-+      }else if( rc==SQLITE_AUTH ){
-+        p->nPgsz = 1024;
-+        rc = SQLITE_OK;
-       }
-     }
-     assert( p->nPgsz>0 || rc!=SQLITE_OK );