Remove plugin_list.h includes from chrome tests in preparation for moving webkit/plugins to content…

webkit/plugins/npapi/mock_plugin_list.h

-// 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.
-
-#ifndef WEBKIT_PLUGINS_NPAPI_MOCK_PLUGIN_LIST_H_
-#define WEBKIT_PLUGINS_NPAPI_MOCK_PLUGIN_LIST_H_
-
-#include "webkit/plugins/npapi/plugin_list.h"
-
-namespace webkit {
-namespace npapi {
-
-// A PluginList for tests that avoids file system IO. There is also no reason
-// to use |lock_| (but it doesn't hurt either).
-class MockPluginList : public PluginList {
- public:
-  MockPluginList();
-  virtual ~MockPluginList();
-
-  void AddPluginToLoad(const WebPluginInfo& plugin);
-  void ClearPluginsToLoad();
-
-  // PluginList:
-  virtual bool GetPluginsNoRefresh(
-      std::vector<webkit::WebPluginInfo>* plugins) OVERRIDE;
-
- private:
-  std::vector<WebPluginInfo> plugins_to_load_;
-
-  // PluginList methods:
-
-  virtual void LoadPluginsIntoPluginListInternal(
-        std::vector<webkit::WebPluginInfo>* plugins) OVERRIDE;
-};
-
-}  // npapi
-}  // webkit
-
-#endif  // WEBKIT_PLUGINS_NPAPI_MOCK_PLUGIN_LIST_H_