Move ViewHostMsg_CreateWidget to mojom

content/renderer/render_view_impl.cc

 // 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.
 
 #include "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <memory>
 
@@ skipping 696 matching lines @@
   WebFrame* opener_frame = RenderFrameImpl::ResolveOpener(
       params.opener_frame_route_id, &opener_view_routing_id);
   if (opener_view_routing_id != MSG_ROUTING_NONE && was_created_by_renderer)
     opener_id_ = opener_view_routing_id;
 
   display_mode_ = params.initial_size.display_mode;
 
   webview_ =
       WebView::create(this, is_hidden() ? blink::WebPageVisibilityStateHidden
                                         : blink::WebPageVisibilityStateVisible);
-  RenderWidget::DoInit(MSG_ROUTING_NONE, webview_->widget(), nullptr);
+  RenderWidget::DoInit(MSG_ROUTING_NONE, webview_->widget(),
+                       CreateWidgetCallback());
 
   g_view_map.Get().insert(std::make_pair(webview(), this));
   g_routing_id_view_map.Get().insert(std::make_pair(GetRoutingID(), this));
 
   const base::CommandLine& command_line =
       *base::CommandLine::ForCurrentProcess();
 
   if (command_line.HasSwitch(switches::kStatsCollectionController))
     stats_collection_observer_.reset(new StatsCollectionObserver(this));
 
@@ skipping 2311 matching lines @@
     NotifyInputEventHandled(input_event->type,
                             INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
   }
 
   std::unique_ptr<InputEventAck> ack(
       new InputEventAck(input_event->type, INPUT_EVENT_ACK_STATE_NOT_CONSUMED));
   OnInputEventAck(std::move(ack));
 }
 
 }  // namespace content