Serializer: move to a subfolder and clean up includes.

src/snapshot/snapshot-common.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.
 
 // The common functionality when building with or without snapshots.
 
 #include "src/v8.h"
 
 #include "src/api.h"
 #include "src/base/platform/platform.h"
 #include "src/full-codegen.h"
-#include "src/snapshot.h"
+#include "src/snapshot/snapshot.h"
 
 namespace v8 {
 namespace internal {
 
 #ifdef DEBUG
 bool Snapshot::SnapshotIsValid(v8::StartupData* snapshot_blob) {
   return !Snapshot::ExtractStartupData(snapshot_blob).is_empty() &&
          !Snapshot::ExtractContextData(snapshot_blob).is_empty();
 }
 #endif  // DEBUG
@@ skipping 197 matching lines @@
   int startup_length;
   memcpy(&startup_length, data->data + kStartupLengthOffset, kIntSize);
   int context_offset = ContextOffset(startup_length);
   const byte* context_data =
       reinterpret_cast<const byte*>(data->data + context_offset);
   DCHECK_LT(context_offset, data->raw_size);
   int context_length = data->raw_size - context_offset;
   return Vector<const byte>(context_data, context_length);
 }
 } }  // namespace v8::internal