[DevTools] Migrate InputHandler from RenderWidgetHostImpl to RenderFrameHostImpl.

content/browser/devtools/render_frame_devtools_agent_host.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/browser/devtools/render_frame_devtools_agent_host.h"
 
 #include <tuple>
 #include <utility>
 
 #include "base/guid.h"
@@ skipping 898 matching lines @@
     in_navigation_protocol_message_buffer_.clear();
   }
 }
 
 void RenderFrameDevToolsAgentHost::UpdateProtocolHandlers(
     RenderFrameHostImpl* host) {
   handlers_frame_host_ = host;
   dom_handler_->SetRenderFrameHost(host);
   if (emulation_handler_)
     emulation_handler_->SetRenderFrameHost(host);
-  input_handler_->SetRenderWidgetHost(
-      host ? host->GetRenderWidgetHost() : nullptr);
+  input_handler_->SetRenderFrameHost(host);
   inspector_handler_->SetRenderFrameHost(host);
   network_handler_->SetRenderFrameHost(host);
   if (page_handler_)
     page_handler_->SetRenderFrameHost(host);
   service_worker_handler_->SetRenderFrameHost(host);
   if (security_handler_)
     security_handler_->SetRenderFrameHost(host);
   if (storage_handler_)
     storage_handler_->SetRenderFrameHost(host);
   target_handler_->SetRenderFrameHost(host);
@@ skipping 209 matching lines @@
     RenderFrameHost* host) {
   return (current_ && current_->host() == host) ||
       (pending_ && pending_->host() == host);
 }
 
 bool RenderFrameDevToolsAgentHost::IsChildFrame() {
   return current_ && current_->host()->GetParent();
 }
 
 }  // namespace content