Pass the RenderProcessHost id on retargeting.

chrome/browser/extensions/api/web_navigation/web_navigation_api.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.
 
 // Implements the Chrome Extensions WebNavigation API.
 
 #include "chrome/browser/extensions/api/web_navigation/web_navigation_api.h"
 
 #include "base/lazy_instance.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 142 matching lines @@
   if (!tab_observer) {
     // If you hit this DCHECK(), please add reproduction steps to
     // http://crbug.com/109464.
     DCHECK(GetViewType(details->source_web_contents) != VIEW_TYPE_TAB_CONTENTS);
     return;
   }
   const FrameNavigationState& frame_navigation_state =
       tab_observer->frame_navigation_state();
 
   content::RenderFrameHost* frame_host = content::RenderFrameHost::FromID(
-      details->source_web_contents->GetRenderProcessHost()->GetID(),
-      details->source_render_frame_id);
+      details->source_render_process_id, details->source_render_frame_id);
   if (!frame_navigation_state.CanSendEvents(frame_host))
     return;
 
   // If the WebContents isn't yet inserted into a tab strip, we need to delay
   // the extension event until the WebContents is fully initialized.
   if (details->not_yet_in_tabstrip) {
     pending_web_contents_[details->target_web_contents] =
         PendingWebContents(details->source_web_contents,
                            frame_host,
                            details->target_web_contents,
@@ skipping 402 matching lines @@
   return g_factory.Pointer();
 }
 
 void WebNavigationAPI::OnListenerAdded(const EventListenerInfo& details) {
   web_navigation_event_router_.reset(new WebNavigationEventRouter(
       Profile::FromBrowserContext(browser_context_)));
   EventRouter::Get(browser_context_)->UnregisterObserver(this);
 }
 
 }  // namespace extensions