Move InitializeICU() to the V8 API and use it.

samples/shell.cc

Index: samples/shell.cc
diff --git a/samples/shell.cc b/samples/shell.cc
index 5c5f056ed1c8b1593efd31a6a5f2ad8deedaaee0..710547c341979eaa6f42194a1b10d2ee183a561f 100644
--- a/samples/shell.cc
+++ b/samples/shell.cc
@@ -66,9 +66,8 @@ static bool run_shell;
 
 
 int main(int argc, char* argv[]) {
+  v8::V8::InitializeICU();
   v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
-  v8::V8::SetFlagsFromString("--noenable_i18n",
-                             static_cast<int>(strlen("--noenable_i18n")));
   v8::Isolate* isolate = v8::Isolate::GetCurrent();
   run_shell = (argc == 1);
   int result;