[sqlite] Respect the gyp and gn component switch.

sql/proxy.cc

-// Copyright 2015 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.
-
-#include "sql/proxy.h"
-
-namespace sql {
-
-int sqlite3_create_function_v2(
-    sqlite3 *db,
-    const char *zFunctionName,
-    int nArg,
-    int eTextRep,
-    void *pApp,
-    void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
-    void (*xStep)(sqlite3_context*,int,sqlite3_value**),
-    void (*xFinal)(sqlite3_context*),
-    void (*xDestroy)(void*)) {
-  return ::sqlite3_create_function_v2(
-      db, zFunctionName, nArg, eTextRep, pApp,
-      xFunc, xStep, xFinal, xDestroy);
-}
-
-void *sqlite3_commit_hook(sqlite3* db, int(*func)(void*), void* arg) {
-  return ::sqlite3_commit_hook(db, func, arg);
-}
-
-}  // namespace sql