Remove ExtensionService::extension_prefs()

chrome/browser/extensions/navigation_observer.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/extensions/navigation_observer.h"
 
 #include "chrome/browser/extensions/extension_install_ui.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "content/public/browser/navigation_controller.h"
@@ skipping 51 matching lines @@
       registry->disabled_extensions().GetExtensionOrAppByURL(
           nav_entry->GetURL());
   if (!extension)
     return;
 
   // Try not to repeatedly prompt the user about the same extension.
   if (prompted_extensions_.find(extension->id()) != prompted_extensions_.end())
     return;
   prompted_extensions_.insert(extension->id());
 
-  ExtensionService* extension_service =
-      extensions::ExtensionSystem::Get(profile_)->extension_service();
-  ExtensionPrefs* extension_prefs = extension_service->extension_prefs();
+  ExtensionPrefs* extension_prefs = ExtensionPrefs::Get(profile_);
   if (extension_prefs->DidExtensionEscalatePermissions(extension->id())) {
     // Keep track of the extension id and nav controller we're prompting for.
     // These must be reset in InstallUIProceed and InstallUIAbort.
     in_progress_prompt_extension_id_ = extension->id();
     in_progress_prompt_navigation_controller_ = nav_controller;
 
     extension_install_prompt_.reset(
         new ExtensionInstallPrompt(nav_controller->GetWebContents()));
     extension_install_prompt_->ConfirmReEnable(this, extension);
   }
@@ skipping 29 matching lines @@
   extension_install_prompt_.reset();
 
   std::string histogram_name = user_initiated ?
       "Extensions.Permissions_ReEnableCancel" :
       "Extensions.Permissions_ReEnableAbort";
   ExtensionService::RecordPermissionMessagesHistogram(
       extension, histogram_name.c_str());
 }
 
 }  // namespace extensions