Split out libplatform into a separate libary

src/mksnapshot.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.
 
 #include <errno.h>
 #include <stdio.h>
 #ifdef COMPRESS_STARTUP_DATA_BZ2
 #include <bzlib.h>
 #endif
 #include <signal.h>
 
 #include "src/v8.h"
 
+#include "include/libplatform/libplatform.h"
 #include "src/assembler.h"
 #include "src/base/platform/platform.h"
 #include "src/bootstrapper.h"
 #include "src/flags.h"
 #include "src/list.h"
 #include "src/natives.h"
 #include "src/serialize.h"
 
 
 using namespace v8;
@@ skipping 286 matching lines @@
   fprintf(stderr, "%s\n", *message_line);
   for (int i = 0; i <= message->GetEndColumn(); ++i) {
     fprintf(stderr, "%c", i < message->GetStartColumn() ? ' ' : '^');
   }
   fprintf(stderr, "\n");
 }
 
 
 int main(int argc, char** argv) {
   V8::InitializeICU();
+  v8::Platform* platform =
+      v8::platform::CreateDefaultPlatform(base::OS::NumberOfProcessorsOnline());
+  v8::V8::InitializePlatform(platform);
   i::Isolate::SetCrashIfDefaultIsolateInitialized();
   i::CpuFeatures::Probe(true);
 
   // By default, log code create information in the snapshot.
   i::FLAG_log_code = true;
 
   // Print the usage if an error occurs when parsing the command line
   // flags or if the help flag is set.
   int result = i::FlagList::SetFlagsFromCommandLine(&argc, argv, true);
   if (result > 0 || argc != 2 || i::FLAG_help) {
@@ skipping 104 matching lines @@
   #ifdef COMPRESS_STARTUP_DATA_BZ2
       BZip2Compressor bzip2;
       writer.SetCompressor(&bzip2);
   #endif
       writer.WriteSnapshot(snapshot_data, ser, context_data, context_ser);
     }
   }
 
   isolate->Dispose();
   V8::Dispose();
+  V8::ShutdownPlatform();
+  delete platform;
   return 0;
 }