Introduce a switch for the new snapshot code and switch...

src/snapshot-common.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 55 matching lines @@
 }
 
 
 bool Snapshot::Initialize2(const char* snapshot_file) {
   if (snapshot_file) {
     int len;
     byte* str = ReadBytes(snapshot_file, &len);
     if (!str) return false;
     Deserialize2(str, len);
     DeleteArray(str);
+    return true;
   } else if (size_ > 0) {
     Deserialize2(data_, size_);
+    return true;
   }
-  return true;
+  return false;
 }
 
 
 bool Snapshot::WriteToFile(const char* snapshot_file) {
   Serializer ser;
   ser.Serialize();
   byte* str;
   int len;
   ser.Finalize(&str, &len);
 
@@ skipping 32 matching lines @@
 bool Snapshot::WriteToFile2(const char* snapshot_file) {
   FileByteSink file(snapshot_file);
   Serializer2 ser(&file);
   ser.Serialize();
   return true;
 }
 
 
 
 } }  // namespace v8::internal