Use container::back() and container::pop_back() for content.

content/browser/plugin_service_impl.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 "content/browser/plugin_service_impl.h"
 
 #include <stddef.h>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 316 matching lines @@
 void PluginServiceImpl::RegisterPepperPlugins() {
   ComputePepperPluginList(&ppapi_plugins_);
   for (size_t i = 0; i < ppapi_plugins_.size(); ++i) {
     RegisterInternalPlugin(ppapi_plugins_[i].ToWebPluginInfo(), true);
   }
 }
 
 // There should generally be very few plugins so a brute-force search is fine.
 PepperPluginInfo* PluginServiceImpl::GetRegisteredPpapiPluginInfo(
     const base::FilePath& plugin_path) {
-  PepperPluginInfo* info = NULL;
   for (size_t i = 0; i < ppapi_plugins_.size(); ++i) {
-    if (ppapi_plugins_[i].path == plugin_path) {
-      info = &ppapi_plugins_[i];
-      break;
-    }
+    if (ppapi_plugins_[i].path == plugin_path)
+      return &ppapi_plugins_[i];
   }
-  if (info)
-    return info;
   // We did not find the plugin in our list. But wait! the plugin can also
   // be a latecomer, as it happens with pepper flash. This information
   // can be obtained from the PluginList singleton and we can use it to
   // construct it and add it to the list. This same deal needs to be done
   // in the renderer side in PepperPluginRegistry.
   WebPluginInfo webplugin_info;
   if (!GetPluginInfoByPath(plugin_path, &webplugin_info))
-    return NULL;
+    return nullptr;
   PepperPluginInfo new_pepper_info;
   if (!MakePepperPluginInfo(webplugin_info, &new_pepper_info))
-    return NULL;
+    return nullptr;
   ppapi_plugins_.push_back(new_pepper_info);
-  return &ppapi_plugins_[ppapi_plugins_.size() - 1];
+  return &ppapi_plugins_.back();
 }
 
 void PluginServiceImpl::SetFilter(PluginServiceFilter* filter) {
   filter_ = filter;
 }
 
 PluginServiceFilter* PluginServiceImpl::GetFilter() {
   return filter_;
 }
 
@@ skipping 49 matching lines @@
 }
 
 bool PluginServiceImpl::PpapiDevChannelSupported(
     BrowserContext* browser_context,
     const GURL& document_url) {
   return GetContentClient()->browser()->IsPluginAllowedToUseDevChannelAPIs(
       browser_context, document_url);
 }
 
 }  // namespace content