Remove usage of FOR_EACH_OBSERVER macro in ios/

ios/chrome/browser/browser_state/browser_state_info_cache.cc

 // Copyright 2015 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 "ios/chrome/browser/browser_state/browser_state_info_cache.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <memory>
@@ skipping 36 matching lines @@
   std::string key = CacheKeyFromBrowserStatePath(browser_state_path);
   DictionaryPrefUpdate update(prefs_, prefs::kBrowserStateInfoCache);
   base::DictionaryValue* cache = update.Get();
 
   std::unique_ptr<base::DictionaryValue> info(new base::DictionaryValue);
   info->SetString(kGAIAIdKey, gaia_id);
   info->SetString(kUserNameKey, user_name);
   cache->SetWithoutPathExpansion(key, info.release());
   AddBrowserStateCacheKey(key);
 
-  FOR_EACH_OBSERVER(BrowserStateInfoCacheObserver, observer_list_,
-                    OnBrowserStateAdded(browser_state_path));
+  for (auto& observer : observer_list_)
+    observer.OnBrowserStateAdded(browser_state_path);
 }
 
 void BrowserStateInfoCache::AddObserver(
     BrowserStateInfoCacheObserver* observer) {
   observer_list_.AddObserver(observer);
 }
 
 void BrowserStateInfoCache::RemoveObserver(
     BrowserStateInfoCacheObserver* observer) {
   observer_list_.RemoveObserver(observer);
 }
 
 void BrowserStateInfoCache::RemoveBrowserState(
     const base::FilePath& browser_state_path) {
   size_t browser_state_index =
       GetIndexOfBrowserStateWithPath(browser_state_path);
   if (browser_state_index == std::string::npos) {
     NOTREACHED();
     return;
   }
   DictionaryPrefUpdate update(prefs_, prefs::kBrowserStateInfoCache);
   base::DictionaryValue* cache = update.Get();
   std::string key = CacheKeyFromBrowserStatePath(browser_state_path);
   cache->Remove(key, nullptr);
   sorted_keys_.erase(std::find(sorted_keys_.begin(), sorted_keys_.end(), key));
 
-  FOR_EACH_OBSERVER(BrowserStateInfoCacheObserver, observer_list_,
-                    OnBrowserStateWasRemoved(browser_state_path));
+  for (auto& observer : observer_list_)
+    observer.OnBrowserStateWasRemoved(browser_state_path);
 }
 
 size_t BrowserStateInfoCache::GetNumberOfBrowserStates() const {
   return sorted_keys_.size();
 }
 
 size_t BrowserStateInfoCache::GetIndexOfBrowserStateWithPath(
     const base::FilePath& browser_state_path) const {
   if (browser_state_path.DirName() != user_data_dir_)
     return std::string::npos;
@@ skipping 103 matching lines @@
     const base::FilePath& browser_state_path) const {
   DCHECK(user_data_dir_ == browser_state_path.DirName());
   base::FilePath base_name = browser_state_path.BaseName();
   return base_name.MaybeAsASCII();
 }
 
 void BrowserStateInfoCache::AddBrowserStateCacheKey(const std::string& key) {
   sorted_keys_.insert(
       std::upper_bound(sorted_keys_.begin(), sorted_keys_.end(), key), key);
 }