Remove NPAPI support for form data

content/child/plugin_messages.h

 // Copyright 2013 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 60 matching lines @@
                            bool /* result */)
 
 // Used to synchronously request a paint for windowless plugins.
 IPC_SYNC_MESSAGE_ROUTED1_0(PluginMsg_Paint,
                            gfx::Rect /* damaged_rect */)
 
 // Sent by the renderer after it paints from its backing store so that the
 // plugin knows it can send more invalidates.
 IPC_MESSAGE_ROUTED0(PluginMsg_DidPaint)
 
-// Gets the form value of the plugin instance synchronously.
-IPC_SYNC_MESSAGE_ROUTED0_2(PluginMsg_GetFormValue,
-                           base::string16 /* value */,
-                           bool /* success */)
-
 // Updates the plugin location.
 IPC_MESSAGE_ROUTED1(PluginMsg_UpdateGeometry,
                     PluginMsg_UpdateGeometry_Param)
 
 // A synchronous version of above.
 IPC_SYNC_MESSAGE_ROUTED1_0(PluginMsg_UpdateGeometrySync,
                            PluginMsg_UpdateGeometry_Param)
 
 IPC_SYNC_MESSAGE_ROUTED1_0(PluginMsg_SetFocus,
                            bool /* focused */)
@@ skipping 83 matching lines @@
 IPC_MESSAGE_ROUTED3(PluginHostMsg_AcceleratedPluginAllocatedIOSurface,
                     int32_t /* width */,
                     int32_t /* height */,
                     uint32_t /* surface_id */)
 
 // Notifies the renderer process that the plugin produced a new frame
 // of content into its IOSurface, and therefore that the compositor
 // needs to redraw.
 IPC_MESSAGE_ROUTED0(PluginHostMsg_AcceleratedPluginSwappedIOSurface)
 #endif