Split out libplatform into a separate libary

tools/lexer-shell.cc

 // Copyright 2013 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 15 matching lines @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <assert.h>
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string>
 #include <vector>
 #include "src/v8.h"
 
+#include "include/libplatform/libplatform.h"
 #include "src/api.h"
 #include "src/base/platform/platform.h"
 #include "src/messages.h"
 #include "src/runtime.h"
 #include "src/scanner-character-streams.h"
 #include "src/scopeinfo.h"
 #include "tools/shell-utils.h"
 #include "src/string-stream.h"
 #include "src/scanner.h"
 
@@ skipping 127 matching lines @@
       &baseline_tokens, repeat);
   if (print_tokens) {
     PrintTokens("Baseline", baseline_tokens);
   }
   return baseline_time;
 }
 
 
 int main(int argc, char* argv[]) {
   v8::V8::InitializeICU();
+  v8::Platform* platform = v8::platform::CreateDefaultPlatform(
+      v8::base::OS::NumberOfProcessorsOnline());
+  v8::V8::InitializePlatform(platform);
   v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
   Encoding encoding = LATIN1;
   bool print_tokens = false;
   std::vector<std::string> fnames;
   std::string benchmark;
   int repeat = 1;
   for (int i = 0; i < argc; ++i) {
     if (strcmp(argv[i], "--latin1") == 0) {
       encoding = LATIN1;
     } else if (strcmp(argv[i], "--utf8") == 0) {
@@ skipping 26 matching lines @@
         time = ProcessFile(fnames[i].c_str(), encoding,
                            reinterpret_cast<Isolate*>(isolate), print_tokens,
                            repeat);
         baseline_total += time.InMillisecondsF();
       }
       if (benchmark.empty()) benchmark = "Baseline";
       printf("%s(RunTime): %.f ms\n", benchmark.c_str(), baseline_total);
     }
   }
   v8::V8::Dispose();
+  v8::V8::ShutdownPlatform();
+  delete platform;
   return 0;
 }