Create an API around PluginService and use it from Chrome.

chrome/browser/extensions/extension_content_settings_api.cc

 // Copyright (c) 2011 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/extension_content_settings_api.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/values.h"
 #include "chrome/browser/content_settings/cookie_settings.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/extensions/extension_content_settings_api_constants.h"
 #include "chrome/browser/extensions/extension_content_settings_helpers.h"
 #include "chrome/browser/extensions/extension_content_settings_store.h"
 #include "chrome/browser/extensions/extension_preference_api_constants.h"
 #include "chrome/browser/extensions/extension_preference_helpers.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension_error_utils.h"
-#include "content/browser/plugin_service.h"
+#include "content/public/browser/plugin_service.h"
 #include "webkit/plugins/npapi/plugin_group.h"
 
 using content::BrowserThread;
+using content::PluginService;
 
 namespace helpers = extension_content_settings_helpers;
 namespace keys = extension_content_settings_api_constants;
 namespace pref_helpers = extension_preference_helpers;
 namespace pref_keys = extension_preference_api_constants;
 
 namespace {
 
 const std::vector<webkit::npapi::PluginGroup>* g_testing_plugin_groups_;
 
@@ skipping 261 matching lines @@
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE, base::Bind(
           &GetResourceIdentifiersFunction::SendResponse, this, true));
 }
 
 // static
 void GetResourceIdentifiersFunction::SetPluginGroupsForTesting(
     const std::vector<webkit::npapi::PluginGroup>* plugin_groups) {
   g_testing_plugin_groups_ = plugin_groups;
 }