Move remaining non-test, non-Chrome-specific Prefs code to base/prefs/.

chrome/browser/ui/webui/task_manager/task_manager_dialog.cc

Index: chrome/browser/ui/webui/task_manager/task_manager_dialog.cc
diff --git a/chrome/browser/ui/webui/task_manager/task_manager_dialog.cc b/chrome/browser/ui/webui/task_manager/task_manager_dialog.cc
index e7a95da943c019117a416bbdef17289a2d7772c5..91651a500fd32665387a55b54512d5f0ff6ab9b3 100644
--- a/chrome/browser/ui/webui/task_manager/task_manager_dialog.cc
+++ b/chrome/browser/ui/webui/task_manager/task_manager_dialog.cc
@@ -11,11 +11,11 @@
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/memory/singleton.h"
+#include "base/prefs/pref_service.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/defaults.h"
 #include "chrome/browser/platform_util.h"
-#include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prefs/scoped_user_pref_update.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"