Make DETECT_IMPORTANT_CONTENT the default Plugins content setting based

chrome/browser/ui/website_settings/website_settings_ui.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/ui/website_settings/website_settings_ui.h"
 
-#include "chrome/browser/plugins/plugins_field_trial.h"
 #include "chrome/grit/chromium_strings.h"
 #include "chrome/grit/generated_resources.h"
+#include "components/content_settings/core/browser/plugins_field_trial.h"
 #include "grit/theme_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/image/image.h"
 
 namespace {
 
 const int kInvalidResourceID = -1;
 
 // The resource IDs for the strings that are displayed on the permissions
@@ skipping 155 matching lines @@
     ContentSettingsType type,
     ContentSetting setting,
     ContentSetting default_setting,
     content_settings::SettingSource source) {
   ContentSetting effective_setting = setting;
   if (effective_setting == CONTENT_SETTING_DEFAULT)
     effective_setting = default_setting;
 
 #if defined(ENABLE_PLUGINS)
   effective_setting =
-      PluginsFieldTrial::EffectiveContentSetting(type, effective_setting);
+      content_settings::PluginsFieldTrial::EffectiveContentSetting(
+          type, effective_setting);
 #endif
 
   const int* button_text_ids = NULL;
   switch (source) {
     case content_settings::SETTING_SOURCE_USER:
       if (setting == CONTENT_SETTING_DEFAULT)
         button_text_ids = kPermissionButtonTextIDDefaultSetting;
       else
         button_text_ids = kPermissionButtonTextIDUserManaged;
       break;
@@ skipping 162 matching lines @@
   // the first time.
   return IDR_PAGEINFO_INFO;
 }
 
 // static
 const gfx::Image& WebsiteSettingsUI::GetFirstVisitIcon(
     const base::string16& first_visit) {
   ResourceBundle& rb = ResourceBundle::GetSharedInstance();
   return rb.GetNativeImageNamed(GetFirstVisitIconID(first_visit));
 }