Propagate opener to BackgroundsContents.

chrome/browser/content_settings/mixed_content_settings_tab_helper.cc

 // Copyright 2017 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/content_settings/mixed_content_settings_tab_helper.h"
 
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/navigation_handle.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/site_instance.h"
 
 using content::BrowserThread;
 using content::WebContents;
 
 DEFINE_WEB_CONTENTS_USER_DATA_KEY(MixedContentSettingsTabHelper);
 
 MixedContentSettingsTabHelper::MixedContentSettingsTabHelper(WebContents* tab)
     : content::WebContentsObserver(tab) {
   if (!tab->HasOpener())
     return;
 
   // Note: using the opener WebContents to override these values only works
   // because in Chrome these settings are maintained at the tab level instead of
   // at the frame level as Blink does.
   MixedContentSettingsTabHelper* opener_settings =
-      MixedContentSettingsTabHelper::FromWebContents(tab->GetOpener());
+      MixedContentSettingsTabHelper::FromWebContents(
+          WebContents::FromRenderFrameHost(tab->GetOpener()));
   if (opener_settings) {
     insecure_content_site_instance_ =
         opener_settings->insecure_content_site_instance_;
     is_running_insecure_content_allowed_ =
         opener_settings->is_running_insecure_content_allowed_;
   }
 }
 
 MixedContentSettingsTabHelper::~MixedContentSettingsTabHelper() {}
 
@@ skipping 18 matching lines @@
   // Note: even though on the renderer this setting exists on a per frame basis,
   // it has always been controlled at the WebContents level. Its value is always
   // inherited from the parent frame and when changed the whole tree is updated.
   content::SiteInstance* new_site =
       navigation_handle->GetRenderFrameHost()->GetSiteInstance();
   if (new_site != insecure_content_site_instance_) {
     insecure_content_site_instance_ = nullptr;
     is_running_insecure_content_allowed_ = false;
   }
 }