Move print to corelib.

runtime/lib/print.cc

Index: runtime/lib/print.cc
diff --git a/runtime/vm/native_arguments.cc b/runtime/lib/print.cc
similarity index 50%
copy from runtime/vm/native_arguments.cc
copy to runtime/lib/print.cc
index 52ef57ff2704e5b04bb166215207d7a2e34399a0..5c5b4d15a194e629e9e60f39970bc2b2a6039c57 100644
--- a/runtime/vm/native_arguments.cc
+++ b/runtime/lib/print.cc
@@ -2,15 +2,16 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-#include "vm/native_arguments.h"
-
-#include "platform/assert.h"
-#include "vm/object.h"
+#include "vm/bootstrap_natives.h"
 
 namespace dart {
 
-void NativeArguments::SetReturn(const Object& value) const {
-  *retval_ = value.raw();
+DEFINE_NATIVE_ENTRY(PrintImplementation_printString, 1) {
+  GET_NATIVE_ARGUMENT(String, str, arguments->At(0));
+  const char* cstring = str.ToCString();
+  fputs(cstring, stdout);
+  fputc('\n', stdout);
+  fflush(stdout);
 }
 
 }  // namespace dart