Add the c++ code part of bindings2/

sky/engine/tonic/dart_converter.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef SKY_ENGINE_TONIC_DART_CONVERTER_H_
 #define SKY_ENGINE_TONIC_DART_CONVERTER_H_
 
 #include <string>
 #include "sky/engine/tonic/dart_state.h"
 #include "sky/engine/tonic/dart_string.h"
@@ skipping 302 matching lines @@
   return Dart_NewStringFromUTF8(reinterpret_cast<const uint8_t*>(val.data()),
                                 val.length());
 }
 
 inline std::string StdStringFromDart(Dart_Handle handle) {
   String string = StringFromDart(handle);
   StringUTF8Adaptor utf8(string);
   return std::string(utf8.data(), utf8.length());
 }
 
+
+// Alias Dart_NewStringFromCString for less typing.
+inline Dart_Handle ToDart(const char* val) {
+  return Dart_NewStringFromCString(val);
+}
+
 }  // namespace blink
 
 #endif  // SKY_ENGINE_TONIC_DART_CONVERTER_H_