Do not suppress referrers for '<a ... rel="noopener">'.

content/browser/web_contents/web_contents_impl.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/web_contents/web_contents_impl.h"
 
 #include <stddef.h>
 
 #include <cmath>
 #include <utility>
@@ skipping 2044 matching lines @@
     // When the opener is suppressed, the original renderer cannot access the
     // new window.  As a result, we need to show and navigate the window here.
     bool was_blocked = false;
     if (delegate_) {
       gfx::Rect initial_rect;
       delegate_->AddNewContents(
           this, new_contents, params.disposition, initial_rect,
           params.user_gesture, &was_blocked);
     }
     if (!was_blocked) {
-      OpenURLParams open_params(params.target_url,
-                                Referrer(),
-                                CURRENT_TAB,
+      OpenURLParams open_params(params.target_url, params.referrer, CURRENT_TAB,
                                 ui::PAGE_TRANSITION_LINK,
                                 true /* is_renderer_initiated */);
       open_params.user_gesture = params.user_gesture;
 
       if (delegate_ && !is_guest &&
           !delegate_->ShouldResumeRequestsForCreatedWindow()) {
         // We are in asynchronous add new contents path, delay opening url
         new_contents->delayed_open_url_params_.reset(
             new OpenURLParams(open_params));
       } else {
@@ skipping 2961 matching lines @@
   for (RenderViewHost* render_view_host : render_view_host_set)
     render_view_host->OnWebkitPreferencesChanged();
 }
 
 void WebContentsImpl::SetJavaScriptDialogManagerForTesting(
     JavaScriptDialogManager* dialog_manager) {
   dialog_manager_ = dialog_manager;
 }
 
 }  // namespace content