Add HasWord(string) method to SpellcheckCustomDictionary

chrome/renderer/spellchecker/custom_dictionary_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/custom_dictionary_engine.h"
 
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
 
 CustomDictionaryEngine::CustomDictionaryEngine() {
 }
 
 CustomDictionaryEngine::~CustomDictionaryEngine() {
 }
 
-void CustomDictionaryEngine::Init(
-    const std::vector<std::string>& custom_words) {
+void CustomDictionaryEngine::Init(const std::set<std::string>& custom_words) {
   // SpellingMenuOberver calls UTF16ToUTF8(word) to convert words for storage,
   // synchronization, and use in the custom dictionary engine. Since
   // (UTF8ToUTF16(UTF16ToUTF8(word)) == word) holds, the engine does not need to
   // normalize the strings.
-  for (std::vector<std::string>::const_iterator it = custom_words.begin();
+  for (std::set<std::string>::const_iterator it = custom_words.begin();
        it != custom_words.end();
        ++it) {
     dictionary_.insert(UTF8ToUTF16(*it));
   }
 }
 
 void CustomDictionaryEngine::OnCustomDictionaryChanged(
     const std::vector<std::string>& words_added,
     const std::vector<std::string>& words_removed) {
   for (std::vector<std::string>::const_iterator it = words_added.begin();
@@ skipping 17 matching lines @@
 
   // The text to be checked is empty on OSX(async) right now.
   // TODO(groby): Fix as part of async hook-up. (http://crbug.com/178241)
   if (text16.empty())
     return false;
   DCHECK(text16.length() >= size_t(misspelling_start + misspelling_len));
   return misspelling_start >= 0 &&
       misspelling_len > 0 &&
       dictionary_.count(text16.substr(misspelling_start, misspelling_len)) > 0;
 }