Remove the two years old code to enable the nacl plugin once if it's disabled. This was added to de…

chrome/browser/plugins/plugin_prefs_unittest.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/plugins/plugin_prefs.h"
 
 #include "base/at_exit.h"
 #include "base/bind.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
@@ skipping 167 matching lines @@
 }
 
 TEST_F(PluginPrefsTest, UnifiedPepperFlashState) {
   base::ShadowingAtExitManager at_exit_manager_;  // Destroys the PluginService.
 
   base::MessageLoop message_loop;
   content::TestBrowserThread ui_thread(BrowserThread::UI, &message_loop);
   webkit::npapi::MockPluginList plugin_list;
   PluginService::GetInstance()->SetPluginListForTesting(&plugin_list);
   PluginService::GetInstance()->Init();
-  plugin_prefs_->SetPluginListForTesting(&plugin_list);
 
   string16 component_updated_plugin_name(
       ASCIIToUTF16("Component-updated Pepper Flash"));
   webkit::WebPluginInfo component_updated_plugin_1(
       component_updated_plugin_name,
       GetComponentUpdatedPepperFlashPath(FILE_PATH_LITERAL("11.3.31.227")),
       ASCIIToUTF16("11.3.31.227"),
       ASCIIToUTF16(""));
   webkit::WebPluginInfo component_updated_plugin_2(
       component_updated_plugin_name,
@@ skipping 45 matching lines @@
   EnablePluginSynchronously(true, component_updated_plugin_1.path, false);
   EXPECT_FALSE(plugin_prefs_->IsPluginEnabled(component_updated_plugin_1));
   EXPECT_FALSE(plugin_prefs_->IsPluginEnabled(component_updated_plugin_2));
   EXPECT_FALSE(plugin_prefs_->IsPluginEnabled(bundled_plugin));
 
   EnablePluginSynchronously(true, bundled_plugin.path, true);
   EXPECT_FALSE(plugin_prefs_->IsPluginEnabled(component_updated_plugin_1));
   EXPECT_FALSE(plugin_prefs_->IsPluginEnabled(component_updated_plugin_2));
   EXPECT_TRUE(plugin_prefs_->IsPluginEnabled(bundled_plugin));
 
-  plugin_prefs_->SetPluginListForTesting(NULL);
   PluginService::GetInstance()->SetPluginListForTesting(NULL);
 }