Reduce usage of FOR_EACH_OBSERVER macro in chrome/browser

chrome/browser/prerender/prerender_contents.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/prerender/prerender_contents.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <functional>
@@ skipping 437 matching lines @@
   // TODO(ajwong): Remove the temporary map once prerendering is aware of
   // multiple session storage namespaces per tab.
   content::SessionStorageNamespaceMap session_storage_namespace_map;
   session_storage_namespace_map[std::string()] = session_storage_namespace;
   return WebContents::CreateWithSessionStorage(
       WebContents::CreateParams(profile_), session_storage_namespace_map);
 }
 
 void PrerenderContents::NotifyPrerenderStart() {
   DCHECK_EQ(FINAL_STATUS_MAX, final_status_);
-  FOR_EACH_OBSERVER(Observer, observer_list_, OnPrerenderStart(this));
+  for (Observer& observer : observer_list_)
+    observer.OnPrerenderStart(this);
 }
 
 void PrerenderContents::NotifyPrerenderStopLoading() {
-  FOR_EACH_OBSERVER(Observer, observer_list_, OnPrerenderStopLoading(this));
+  for (Observer& observer : observer_list_)
+    observer.OnPrerenderStopLoading(this);
 }
 
 void PrerenderContents::NotifyPrerenderDomContentLoaded() {
-  FOR_EACH_OBSERVER(Observer, observer_list_,
-                    OnPrerenderDomContentLoaded(this));
+  for (Observer& observer : observer_list_)
+    observer.OnPrerenderDomContentLoaded(this);
 }
 
 void PrerenderContents::NotifyPrerenderStop() {
   DCHECK_NE(FINAL_STATUS_MAX, final_status_);
-  FOR_EACH_OBSERVER(Observer, observer_list_, OnPrerenderStop(this));
+  for (Observer& observer : observer_list_)
+    observer.OnPrerenderStop(this);
   observer_list_.Clear();
 }
 
 bool PrerenderContents::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   // The following messages we do want to consume.
   IPC_BEGIN_MESSAGE_MAP(PrerenderContents, message)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_CancelPrerenderForPrinting,
                         OnCancelPrerenderForPrinting)
     IPC_MESSAGE_UNHANDLED(handled = false)
@@ skipping 262 matching lines @@
 void PrerenderContents::AddResourceThrottle(
     const base::WeakPtr<PrerenderResourceThrottle>& throttle) {
   resource_throttles_.push_back(throttle);
 }
 
 void PrerenderContents::AddNetworkBytes(int64_t bytes) {
   network_bytes_ += bytes;
 }
 
 }  // namespace prerender