Render Core Animation plugins through WebKit's compositor rather than

ui/base/ui_base_switches.h

 // 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.
 
 // Defines all the command-line switches used by ui/base.
 
 #ifndef UI_BASE_UI_BASE_SWITCHES_H_
 #define UI_BASE_UI_BASE_SWITCHES_H_
 #pragma once
 
+#include "base/compiler_specific.h"
 #include "ui/base/ui_export.h"
 
 namespace switches {
 
 UI_EXPORT extern const char kLang[];
 UI_EXPORT extern const char kLocalePak[];
 
+#if defined(OS_MACOSX)
+// TODO(kbr): remove this and the associated old code path:
+// http://crbug.com/105344
+// This isn't really the right place for this switch, but is the most
+// convenient place where it can be shared between
+// src/webkit/plugins/npapi/ and src/content/plugin/ .
+UI_EXPORT extern const char kDisableCompositedCoreAnimationPlugins[];
+#endif
+
 }  // namespace switches
 
 #endif  // UI_BASE_UI_BASE_SWITCHES_H_