Reduce usage of FOR_EACH_OBSERVER macro in chrome/browser

chrome/browser/spellchecker/spellcheck_custom_dictionary.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_custom_dictionary.h"
 
 #include <stddef.h>
 
 #include <functional>
 #include <utility>
@@ skipping 407 matching lines @@
 void SpellcheckCustomDictionary::OnLoaded(
     std::unique_ptr<LoadFileResult> result) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   DCHECK(result);
   Change dictionary_change;
   dictionary_change.AddWords(result->words);
   dictionary_change.Sanitize(GetWords());
   Apply(dictionary_change);
   Sync(dictionary_change);
   is_loaded_ = true;
-  FOR_EACH_OBSERVER(Observer, observers_, OnCustomDictionaryLoaded());
+  for (Observer& observer : observers_)
+    observer.OnCustomDictionaryLoaded();
   if (!result->is_valid_file) {
     // Save cleaned up data only after startup.
     fix_invalid_file_.Reset(
         base::Bind(&SpellcheckCustomDictionary::FixInvalidFile,
                    weak_ptr_factory_.GetWeakPtr(), base::Passed(&result)));
     BrowserThread::PostAfterStartupTask(
         FROM_HERE, BrowserThread::GetTaskRunnerForThread(BrowserThread::UI),
         fix_invalid_file_.callback());
   }
 }
@@ skipping 76 matching lines @@
   if (words_.size() > spellcheck::MAX_SYNCABLE_DICTIONARY_WORDS)
     StopSyncing(syncer::DICTIONARY);
 
   return error;
 }
 
 void SpellcheckCustomDictionary::Notify(const Change& dictionary_change) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   if (!IsLoaded() || dictionary_change.empty())
     return;
-  FOR_EACH_OBSERVER(Observer,
-                    observers_,
-                    OnCustomDictionaryChanged(dictionary_change));
+  for (Observer& observer : observers_)
+    observer.OnCustomDictionaryChanged(dictionary_change);
 }