Add --parse-all option in order to benchmark and measure the scanner/parser performance.

runtime/vm/native_api_impl.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // 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 "include/dart_native_api.h"
 
 #include "platform/assert.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_api_message.h"
 #include "vm/dart_api_state.h"
@@ skipping 111 matching lines @@
   DARTSCOPE(Thread::Current());
   Dart_Handle result = Api::CheckAndFinalizePendingClasses(T);
   if (::Dart_IsError(result)) {
     return result;
   }
   CHECK_CALLBACK_STATE(T);
   CompileAll(T, &result);
   return result;
 }
 
+
+static void ParseAll(Thread* thread, Dart_Handle* result) {
+  ASSERT(thread != NULL);
+  const Error& error = Error::Handle(thread->zone(),
+                                     Library::ParseAll(thread));
+  if (error.IsNull()) {
+    *result = Api::Success();
+  } else {
+    *result = Api::NewHandle(thread, error.raw());
+  }
+}
+
+
+DART_EXPORT Dart_Handle Dart_ParseAll() {
+  DARTSCOPE(Thread::Current());
+  Dart_Handle result = Api::CheckAndFinalizePendingClasses(T);
+  if (::Dart_IsError(result)) {
+    return result;
+  }
+  CHECK_CALLBACK_STATE(T);
+  ParseAll(T, &result);
+  return result;
+}
+
 }  // namespace dart