Move NPAPI implementation out of webkit/plugins/npapi and into content.

webkit/plugins/npapi/plugin_constants_win.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.
-
-#ifndef WEBKIT_PLUGINS_NPAPI_PLUGIN_CONSTANTS_WIN_H_
-#define WEBKIT_PLUGINS_NPAPI_PLUGIN_CONSTANTS_WIN_H_
-
-#include "base/strings/string16.h"
-
-#if !defined(OS_WIN)
-#error "Windows-only header"
-#endif
-
-namespace webkit {
-namespace npapi {
-
-// The window class name for a plugin window.
-extern const char16 kNativeWindowClassName[];
-
-// The name of the window class name for the wrapper HWND around the actual
-// plugin window that's used when running in multi-process mode.  This window
-// is created on the browser UI thread.
-extern const char16 kWrapperNativeWindowClassName[];
-
-// The name of the custom window message that the browser uses to tell the
-// plugin process to paint a window.
-extern const char16 kPaintMessageName[];
-
-// The name of the registry key which NPAPI plugins update on installation.
-extern const char16 kRegistryMozillaPlugins[];
-
-extern const char16 kMozillaActiveXPlugin[];
-extern const char16 kNewWMPPlugin[];
-extern const char16 kOldWMPPlugin[];
-extern const char16 kYahooApplicationStatePlugin[];
-extern const char16 kWanWangProtocolHandlerPlugin[];
-extern const char16 kFlashPlugin[];
-extern const char16 kAcrobatReaderPlugin[];
-extern const char16 kRealPlayerPlugin[];
-extern const char16 kSilverlightPlugin[];
-extern const char16 kJavaPlugin1[];
-extern const char16 kJavaPlugin2[];
-
-extern const char kGPUPluginMimeType[];
-
-}  // namespace npapi
-}  // namespace webkit
-
-#endif  // WEBKIT_PLUGINS_NPAPI_PLUGIN_PLUGIN_LIST_H_