Componentize spellcheck [3]: move renderer/ files to component.

chrome/renderer/spellchecker/platform_spelling_engine.cc

-// Copyright (c) 2012 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 "chrome/renderer/spellchecker/platform_spelling_engine.h"
-
-#include "components/spellcheck/common/spellcheck_messages.h"
-#include "content/public/renderer/render_thread.h"
-
-using content::RenderThread;
-
-SpellingEngine* CreateNativeSpellingEngine() {
-  return new PlatformSpellingEngine();
-}
-
-void PlatformSpellingEngine::Init(base::File bdict_file) {
-  DCHECK(!bdict_file.IsValid());
-}
-
-bool PlatformSpellingEngine::InitializeIfNeeded() {
-  return false;
-}
-
-bool PlatformSpellingEngine::IsEnabled() {
-  return true;
-}
-
-// Synchronously query against the platform's spellchecker.
-// TODO(groby): We might want async support here, too. Ideally,
-// all engines share a similar path for async requests.
-bool PlatformSpellingEngine::CheckSpelling(const base::string16& word_to_check,
-                                           int tag) {
-  bool word_correct = false;
-  RenderThread::Get()->Send(new SpellCheckHostMsg_CheckSpelling(
-      word_to_check, tag, &word_correct));
-  return word_correct;
-}
-
-// Synchronously query against the platform's spellchecker.
-// TODO(groby): We might want async support here, too. Ideally,
-// all engines share a similar path for async requests.
-void PlatformSpellingEngine::FillSuggestionList(
-    const base::string16& wrong_word,
-    std::vector<base::string16>* optional_suggestions) {
-    RenderThread::Get()->Send(new SpellCheckHostMsg_FillSuggestionList(
-        wrong_word, optional_suggestions));
-}