Create an API around PluginService and use it from Chrome.

chrome/browser/component_updater/pepper_flash_component_installer.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/component_updater/flash_component_installer.h"
 
 #include <string.h>
 
 #include "base/base_paths.h"
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
 #include "base/values.h"
 #include "base/version.h"
 #include "build/build_config.h"
 #include "chrome/browser/component_updater/component_updater_service.h"
 #include "chrome/browser/plugin_prefs.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/installer/util/browser_distribution.h"
-#include "content/browser/plugin_service.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/browser/plugin_service.h"
 #include "content/public/common/pepper_plugin_info.h"
 #include "ppapi/c/private/ppb_pdf.h"
 #include "webkit/plugins/plugin_constants.h"
 #include "webkit/plugins/ppapi/plugin_module.h"
 
 using content::BrowserThread;
+using content::PluginService;
 
 namespace {
 
 // CRX hash. The extension id is: mimojjlkmoijpicakmndhoigimigcmbb.
 const uint8 sha2_hash[] = {0xc8, 0xce, 0x99, 0xba, 0xce, 0x89, 0xf8, 0x20,
                            0xac, 0xd3, 0x7e, 0x86, 0x8c, 0x86, 0x2c, 0x11,
                            0xb9, 0x40, 0xc5, 0x55, 0xaf, 0x08, 0x63, 0x70,
                            0x54, 0xf9, 0x56, 0xd3, 0xe7, 0x88, 0xba, 0x8c};
 
 // File name of the Pepper Flash plugin on different platforms.
@@ skipping 297 matching lines @@
 }
 
 }  // namespace
 
 void RegisterPepperFlashComponent(ComponentUpdateService* cus) {
 #if defined(GOOGLE_CHROME_BUILD)
   BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
                           base::Bind(&StartPepperFlashUpdateRegistration, cus));
 #endif
 }