Remove NPAPI from browser and utility

content/common/frame_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.
 
 // IPC messages for interacting with frames.
 // Multiply-included message file, hence no include guard.
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 1109 matching lines @@
                             content::WebPluginInfo /* plugin info */,
                             std::string /* actual_mime_type */)
 
 // A renderer sends this to the browser process when it wants to temporarily
 // whitelist an origin's plugin content as essential. This temporary whitelist
 // is specific to a top level frame, and is cleared when the whitelisting
 // RenderFrame is destroyed.
 IPC_MESSAGE_ROUTED1(FrameHostMsg_PluginContentOriginAllowed,
                     url::Origin /* content_origin */)
 
-// A renderer sends this to the browser process when it wants to
-// create a plugin.  The browser will create the plugin process if
-// necessary, and will return a handle to the channel on success.
-// On error an empty string is returned.
-IPC_SYNC_MESSAGE_CONTROL4_2(FrameHostMsg_OpenChannelToPlugin,
-                            int /* render_frame_id */,
-                            GURL /* url */,
-                            GURL /* page_url */,
-                            std::string /* mime_type */,
-                            IPC::ChannelHandle /* channel_handle */,
-                            content::WebPluginInfo /* info */)
-
 // A renderer sends this to the browser process when it wants to create a ppapi
 // plugin.  The browser will create the plugin process if necessary, and will
 // return a handle to the channel on success.
 //
 // The plugin_child_id is the ChildProcessHost ID assigned in the browser
 // process. This ID is valid only in the context of the browser process and is
 // used to identify the proper process when the renderer notifies it that the
 // plugin is hung.
 //
 // On error an empty string and null handles are returned.
@@ skipping 306 matching lines @@
 IPC_MESSAGE_ROUTED3(FrameHostMsg_FindMatchRects_Reply,
                     int /* version */,
                     std::vector<gfx::RectF> /* rects */,
                     gfx::RectF /* active_rect */)
 #endif
 
 // Adding a new message? Stick to the sort order above: first platform
 // independent FrameMsg, then ifdefs for platform specific FrameMsg, then
 // platform independent FrameHostMsg, then ifdefs for platform specific
 // FrameHostMsg.