Buildfix for windows after r22180

tools/parser-shell.cc

Index: tools/parser-shell.cc
diff --git a/tools/parser-shell.cc b/tools/parser-shell.cc
index 2dae0558b89c8746cad8f199268b0c479ef96ea7..6b5c0263c866b38abfd6e667370e3ec91f8cd514 100644
--- a/tools/parser-shell.cc
+++ b/tools/parser-shell.cc
@@ -122,8 +122,7 @@ std::pair<v8::base::TimeDelta, v8::base::TimeDelta> RunBaselineParser(
 
 int main(int argc, char* argv[]) {
   v8::V8::InitializeICU();
-  v8::Platform* platform = v8::platform::CreateDefaultPlatform(
-      v8::base::OS::NumberOfProcessorsOnline());
+  v8::Platform* platform = v8::platform::CreateDefaultPlatform();
   v8::V8::InitializePlatform(platform);
   v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
   Encoding encoding = LATIN1;