Adds extension events for custom dictionary load/change.

chrome/browser/spellchecker/spellcheck_service.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/browser/spellchecker/spellcheck_service.h"
 
 #include "base/prefs/pref_member.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/string_split.h"
 #include "base/synchronization/waitable_event.h"
@@ skipping 56 matching lines @@
   registrar_.Add(this,
                  content::NOTIFICATION_RENDERER_PROCESS_CREATED,
                  content::NotificationService::AllSources());
 }
 
 SpellcheckService::~SpellcheckService() {
   // Remove pref observers
   pref_change_registrar_.RemoveAll();
 }
 
+base::WeakPtr<SpellcheckService> SpellcheckService::GetWeakPtr() {
+  return weak_ptr_factory_.GetWeakPtr();
+}
+
 // static
 int SpellcheckService::GetSpellCheckLanguages(
     content::BrowserContext* context,
     std::vector<std::string>* languages) {
   PrefService* prefs = user_prefs::UserPrefs::Get(context);
   StringPrefMember accept_languages_pref;
   StringPrefMember dictionary_language_pref;
   accept_languages_pref.Init(prefs::kAcceptLanguages, prefs);
   dictionary_language_pref.Init(prefs::kSpellCheckDictionary, prefs);
   std::string dictionary_language = dictionary_language_pref.GetValue();
@@ skipping 192 matching lines @@
   hunspell_dictionary_->AddObserver(this);
   hunspell_dictionary_->Load();
 }
 
 void SpellcheckService::OnUseSpellingServiceChanged() {
   bool enabled = pref_change_registrar_.prefs()->GetBoolean(
       prefs::kSpellCheckUseSpellingService);
   if (metrics_)
     metrics_->RecordSpellingServiceStats(enabled);
 }