Pass the RenderProcessHost id on retargeting.

chrome/browser/devtools/devtools_window.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.
 
 #ifndef CHROME_BROWSER_DEVTOOLS_DEVTOOLS_WINDOW_H_
 #define CHROME_BROWSER_DEVTOOLS_DEVTOOLS_WINDOW_H_
 
 #include "base/macros.h"
 #include "chrome/browser/devtools/devtools_contents_resizing_strategy.h"
 #include "chrome/browser/devtools/devtools_toggle_action.h"
@@ skipping 262 matching lines @@
 
   // content::WebContentsDelegate:
   void ActivateContents(content::WebContents* contents) override;
   void AddNewContents(content::WebContents* source,
                       content::WebContents* new_contents,
                       WindowOpenDisposition disposition,
                       const gfx::Rect& initial_rect,
                       bool user_gesture,
                       bool* was_blocked) override;
   void WebContentsCreated(content::WebContents* source_contents,
+                          int opener_render_process_id,
                           int opener_render_frame_id,
                           const std::string& frame_name,
                           const GURL& target_url,
                           content::WebContents* new_contents) override;
   void CloseContents(content::WebContents* source) override;
   void ContentsZoomChange(bool zoom_in) override;
   void BeforeUnloadFired(content::WebContents* tab,
                          bool proceed,
                          bool* proceed_to_fire_unload) override;
   bool PreHandleKeyboardEvent(content::WebContents* source,
@@ skipping 58 matching lines @@
   base::Closure ready_for_test_callback_;
 
   base::TimeTicks inspect_element_start_time_;
   std::unique_ptr<DevToolsEventForwarder> event_forwarder_;
 
   friend class DevToolsEventForwarder;
   DISALLOW_COPY_AND_ASSIGN(DevToolsWindow);
 };
 
 #endif  // CHROME_BROWSER_DEVTOOLS_DEVTOOLS_WINDOW_H_