Cleaning up the custom dictionary code relative to the SpellcheckService to make the custom diction…

chrome/browser/spellchecker/spellcheck_custom_dictionary.h

Index: chrome/browser/spellchecker/spellcheck_custom_dictionary.h
diff --git a/chrome/browser/spellchecker/spellcheck_custom_dictionary.h b/chrome/browser/spellchecker/spellcheck_custom_dictionary.h
index 0043bfbda273fe664f545f0472b907959219cc00..939a349e9f9558171afce10918fc2fd28d438383 100644
--- a/chrome/browser/spellchecker/spellcheck_custom_dictionary.h
+++ b/chrome/browser/spellchecker/spellcheck_custom_dictionary.h
@@ -10,6 +10,7 @@
 
 #include "base/file_path.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "chrome/browser/spellchecker/spellcheck_dictionary.h"
 #include "chrome/common/spellcheck_common.h"
 
@@ -30,6 +31,14 @@ class SpellcheckCustomDictionary : public SpellcheckDictionary {
   void LoadDictionaryIntoCustomWordList(
       chrome::spellcheck_common::WordList* custom_words);
 
+  // Adds the given word to the custom words list and inform renderer of the
+  // update.
+  void AddWord(const std::string& word);
+
+  // The reply point for PostTaskAndReply. Called when AddWord is finished
+  // adding a word in the background.
+  void AddWordComplete(const std::string& word);
+
  private:
   // In-memory cache of the custom words file.
   chrome::spellcheck_common::WordList custom_words_;
@@ -37,6 +46,8 @@ class SpellcheckCustomDictionary : public SpellcheckDictionary {
   // A path for custom dictionary per profile.
   FilePath custom_dictionary_path_;
 
+  base::WeakPtrFactory<SpellcheckCustomDictionary> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(SpellcheckCustomDictionary);
 };