Serializer: move to a subfolder and clean up includes.

src/snapshot-empty.cc

-// Copyright 2006-2008 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Used for building without snapshots.
-
-#include "src/v8.h"
-
-#include "src/snapshot.h"
-
-namespace v8 {
-namespace internal {
-
-#ifdef V8_USE_EXTERNAL_STARTUP_DATA
-// Dummy implementations of Set*FromFile(..) APIs.
-//
-// These are meant for use with snapshot-external.cc. Should this file
-// be compiled with those options we just supply these dummy implementations
-// below. This happens when compiling the mksnapshot utility.
-void SetNativesFromFile(StartupData* data) { CHECK(false); }
-void SetSnapshotFromFile(StartupData* data) { CHECK(false); }
-void ReadNatives() {}
-void DisposeNatives() {}
-#endif  // V8_USE_EXTERNAL_STARTUP_DATA
-
-
-const v8::StartupData* Snapshot::DefaultSnapshotBlob() { return NULL; }
-} }  // namespace v8::internal