Adds extension events for custom dictionary load/change.

chrome/browser/spellchecker/spellcheck_service.h

 // 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.
 
 #ifndef CHROME_BROWSER_SPELLCHECKER_SPELLCHECK_SERVICE_H_
 #define CHROME_BROWSER_SPELLCHECKER_SPELLCHECK_SERVICE_H_
 
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 36 matching lines @@
   // Dictionary format used for loading an external dictionary.
   enum DictionaryFormat {
     DICT_HUNSPELL,
     DICT_TEXT,
     DICT_UNKNOWN,
   };
 
   explicit SpellcheckService(content::BrowserContext* context);
   ~SpellcheckService() override;
 
+  base::WeakPtr<SpellcheckService> GetWeakPtr();
+
   // This function computes a vector of strings which are to be displayed in
   // the context menu over a text area for changing spell check languages. It
   // returns the index of the current spell check language in the vector.
   // TODO(port): this should take a vector of base::string16, but the
   // implementation has some dependencies in l10n util that need porting first.
   static int GetSpellCheckLanguages(content::BrowserContext* context,
                                     std::vector<std::string>* languages);
 
   // Computes a vector of strings which are to be displayed in the context
   // menu from |accept_languages| and |dictionary_language|.
@@ skipping 87 matching lines @@
   scoped_ptr<SpellcheckCustomDictionary> custom_dictionary_;
 
   scoped_ptr<SpellcheckHunspellDictionary> hunspell_dictionary_;
 
   base::WeakPtrFactory<SpellcheckService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SpellcheckService);
 };
 
 #endif  // CHROME_BROWSER_SPELLCHECKER_SPELLCHECK_SERVICE_H_