Remove NPAPI from browser and utility

chrome/browser/printing/print_preview_test.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/printing/print_preview_test.h"
 
 #include "chrome/test/base/dialog_test_browser_window.h"
 #include "content/public/browser/plugin_service.h"
 
 PrintPreviewTest::PrintPreviewTest() {}
 PrintPreviewTest::~PrintPreviewTest() {}
 
 void PrintPreviewTest::SetUp() {
   BrowserWithTestWindowTest::SetUp();
 
   // The PluginService will be destroyed at the end of the test (due to the
   // ShadowingAtExitManager in our base class).
   content::PluginService::GetInstance()->Init();
-  content::PluginService::GetInstance()->DisablePluginsDiscoveryForTesting();
 }
 
 BrowserWindow* PrintPreviewTest::CreateBrowserWindow() {
   return new DialogTestBrowserWindow;
 }