Mojo: Reimplement unicode.js in JavaScript, remove native implementation.

mojo/bindings/js/unicode.cc

-// Copyright 2014 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.
-
-#include "mojo/bindings/js/unicode.h"
-
-#include "gin/arguments.h"
-#include "gin/array_buffer.h"
-#include "gin/object_template_builder.h"
-#include "gin/per_isolate_data.h"
-#include "gin/public/wrapper_info.h"
-
-namespace mojo {
-namespace js {
-
-namespace {
-
-v8::Handle<v8::Value> DecodeUtf8String(const gin::Arguments& args,
-                                       const gin::ArrayBufferView& buffer) {
-  assert(static_cast<int>(buffer.num_bytes()) >= 0);
-  return v8::String::NewFromUtf8(args.isolate(),
-                                 reinterpret_cast<char*>(buffer.bytes()),
-                                 v8::String::kNormalString,
-                                 static_cast<int>(buffer.num_bytes()));
-}
-
-int EncodeUtf8String(const gin::Arguments& args,
-                     v8::Handle<v8::Value> str_value,
-                     const gin::ArrayBufferView& buffer) {
-  assert(static_cast<int>(buffer.num_bytes()) >= 0);
-  v8::Handle<v8::String> str = str_value->ToString();
-  int num_bytes = str->WriteUtf8(
-      reinterpret_cast<char*>(buffer.bytes()),
-      static_cast<int>(buffer.num_bytes()),
-      NULL,
-      v8::String::NO_NULL_TERMINATION | v8::String::REPLACE_INVALID_UTF8);
-  return num_bytes;
-}
-
-int Utf8Length(v8::Handle<v8::Value> str_value) {
-  return str_value->ToString()->Utf8Length();
-}
-
-gin::WrapperInfo g_wrapper_info = { gin::kEmbedderNativeGin };
-
-}  // namespace
-
-const char Unicode::kModuleName[] = "mojo/public/js/bindings/unicode";
-
-v8::Local<v8::Value> Unicode::GetModule(v8::Isolate* isolate) {
-  gin::PerIsolateData* data = gin::PerIsolateData::From(isolate);
-  v8::Local<v8::ObjectTemplate> templ = data->GetObjectTemplate(
-      &g_wrapper_info);
-
-  if (templ.IsEmpty()) {
-    templ = gin::ObjectTemplateBuilder(isolate)
-                .SetMethod("decodeUtf8String", DecodeUtf8String)
-                .SetMethod("encodeUtf8String", EncodeUtf8String)
-                .SetMethod("utf8Length", Utf8Length)
-                .Build();
-
-    data->SetObjectTemplate(&g_wrapper_info, templ);
-  }
-
-  return templ->NewInstance();
-}
-
-}  // namespace js
-}  // namespace mojo