Move ViewHostMsg_CreateWidget to mojom

content/common/view_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.
 
 // IPC messages for page rendering.
 // Multiply-included message file, hence no include guard.
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 614 matching lines @@
 
 // -----------------------------------------------------------------------------
 // Messages sent from the renderer to the browser.
 
 // Sent by renderer to request a ViewMsg_BeginFrame message for upcoming
 // display events. If |enabled| is true, the BeginFrame message will continue
 // to be be delivered until the notification is disabled.
 IPC_MESSAGE_ROUTED1(ViewHostMsg_SetNeedsBeginFrames,
                     bool /* enabled */)
 
-// Similar to ViewHostMsg_CreateWindow, except used for sub-widgets, like
-// <select> dropdowns.  This message is sent to the WebContentsImpl that
-// contains the widget being created.
-IPC_SYNC_MESSAGE_CONTROL2_1(ViewHostMsg_CreateWidget,
-                            int /* opener_id */,
-                            blink::WebPopupType /* popup type */,
-                            int /* route_id */)
-
 // Similar to ViewHostMsg_CreateWidget except the widget is a full screen
 // window.
 IPC_SYNC_MESSAGE_CONTROL1_1(ViewHostMsg_CreateFullscreenWidget,
                             int /* opener_id */,
                             int /* route_id */)
 
 // These three messages are sent to the parent RenderViewHost to display the
 // page/widget that was created by
 // CreateWindow/CreateWidget/CreateFullscreenWidget. routing_id
 // refers to the id that was returned from the Create message above.
@@ skipping 292 matching lines @@
                     int /* y */)
 
 #elif defined(OS_MACOSX)
 // Receives content of a web page as plain text.
 IPC_MESSAGE_ROUTED1(ViewMsg_GetRenderedTextCompleted, std::string)
 #endif
 
 // Adding a new message? Stick to the sort order above: first platform
 // independent ViewMsg, then ifdefs for platform specific ViewMsg, then platform
 // independent ViewHostMsg, then ifdefs for platform specific ViewHostMsg.