Remove windowed NPAPI code

content/common/plugin_process_messages.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.
 //
 // Multiply-included message file, hence no include guard.
 
 #include <stdint.h>
 
 #include "build/build_config.h"
 #include "content/common/content_export.h"
@@ skipping 38 matching lines @@
 // Response to a PluginProcessMsg_CreateChannel message.
 IPC_MESSAGE_CONTROL1(PluginProcessHostMsg_ChannelCreated,
                      IPC::ChannelHandle /* channel_handle */)
 
 IPC_MESSAGE_CONTROL1(PluginProcessHostMsg_ChannelDestroyed,
                      int /* renderer_id */)
 
 IPC_MESSAGE_CONTROL1(PluginProcessHostMsg_ClearSiteDataResult,
                      bool /* success */)
 
-#if defined(OS_WIN)
-// Destroys the given window's parent on the UI thread.
-IPC_MESSAGE_CONTROL2(PluginProcessHostMsg_PluginWindowDestroyed,
-                     HWND /* window */,
-                     HWND /* parent */)
-#endif
-
 #if defined(OS_MACOSX)
 // On Mac OS X, we need the browser to keep track of plugin windows so
 // that it can add and remove them from stacking groups, hide and show the
 // menu bar, etc.  We pass the window rect for convenience so that the
 // browser can easily tell if the window is fullscreen.
 
 // Notifies the browser that the plugin has shown a window.
 IPC_MESSAGE_CONTROL3(PluginProcessHostMsg_PluginShowWindow,
                      uint32_t /* window ID */,
                      gfx::Rect /* window rect */,
                      bool /* modal */)
 
 // Notifies the browser that the plugin has hidden a window.
 IPC_MESSAGE_CONTROL2(PluginProcessHostMsg_PluginHideWindow,
                      uint32_t /* window ID */,
                      gfx::Rect /* window rect */)
 
 // Notifies the browser that a plugin instance has requested a cursor
 // visibility change.
 IPC_MESSAGE_CONTROL1(PluginProcessHostMsg_PluginSetCursorVisibility,
                      bool /* cursor visibility */)
 #endif