Pass the RenderProcessHost id on retargeting.

chrome/browser/devtools/devtools_window.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 "chrome/browser/devtools/devtools_window.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
@@ skipping 983 matching lines @@
 
   WebContents* inspected_web_contents = GetInspectedWebContents();
   if (inspected_web_contents) {
     inspected_web_contents->GetDelegate()->AddNewContents(
         source, new_contents, disposition, initial_rect, user_gesture,
         was_blocked);
   }
 }
 
 void DevToolsWindow::WebContentsCreated(WebContents* source_contents,
+                                        int opener_render_process_id,
                                         int opener_render_frame_id,
                                         const std::string& frame_name,
                                         const GURL& target_url,
                                         WebContents* new_contents) {
   if (target_url.SchemeIs(content::kChromeDevToolsScheme) &&
       target_url.path().rfind("toolbox.html") != std::string::npos) {
     CHECK(can_dock_);
     if (toolbox_web_contents_)
       delete toolbox_web_contents_;
     toolbox_web_contents_ = new_contents;
@@ skipping 356 matching lines @@
 bool DevToolsWindow::ReloadInspectedWebContents(bool bypass_cache) {
   // Only route reload via front-end if the agent is attached.
   WebContents* wc = GetInspectedWebContents();
   if (!wc || wc->GetCrashedStatus() != base::TERMINATION_STATUS_STILL_RUNNING)
     return false;
   base::FundamentalValue bypass_cache_value(bypass_cache);
   bindings_->CallClientFunction("DevToolsAPI.reloadInspectedPage",
                                 &bypass_cache_value, nullptr, nullptr);
   return true;
 }