Create an API around PluginService and use it from Chrome.

chrome/browser/ui/views/content_setting_bubble_contents.cc

Index: chrome/browser/ui/views/content_setting_bubble_contents.cc
===================================================================
--- chrome/browser/ui/views/content_setting_bubble_contents.cc	(revision 115169)
+++ chrome/browser/ui/views/content_setting_bubble_contents.cc	(working copy)
@@ -18,10 +18,10 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/content_settings/content_setting_bubble_model.h"
 #include "chrome/browser/ui/views/browser_dialogs.h"
-#include "content/browser/plugin_service.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
+#include "content/public/browser/plugin_service.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/views/controls/button/radio_button.h"
@@ -49,6 +49,8 @@
 // narrow bubbles with lots of line-wrapping.
 const int kMinMultiLineContentsWidth = 250;
 
+using content::PluginService;
+
 class ContentSettingBubbleContents::Favicon : public views::ImageView {
  public:
   Favicon(const SkBitmap& image,