Get rid of webkit/plugins/plugin_constants.* and move them to content/public/common/content_constan…

webkit/plugins/plugin_switches.h

Index: webkit/plugins/plugin_switches.h
===================================================================
--- webkit/plugins/plugin_switches.h	(revision 216518)
+++ webkit/plugins/plugin_switches.h	(working copy)
@@ -1,18 +0,0 @@
-// Copyright (c) 2011 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.
-
-#ifndef WEBKIT_PLUGINS_PLUGIN_SWITCHES_H_
-#define WEBKIT_PLUGINS_PLUGIN_SWITCHES_H_
-
-#include "build/build_config.h"
-
-namespace switches {
-
-extern const char kDebugPluginLoading[];
-extern const char kDisablePepper3d[];
-extern const char kPpapiFlashArgs[];
-
-}  // namespace switches
-
-#endif  // WEBKIT_PLUGINS_PLUGIN_SWITCHES_H_