Add user_gesture param to WebContentsDelegate::ActivateContents

chrome/browser/ui/blocked_content/app_modal_dialog_helper.cc

 // Copyright 2014 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/ui/blocked_content/app_modal_dialog_helper.h"
 
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
@@ skipping 16 matching lines @@
         active_web_contents->GetOpener() == dialog_host) {
       // It's indeed a popup from the dialog opening WebContents. Store it, so
       // we can focus it later.
       popup_ = active_web_contents;
       Observe(popup_);
     }
   }
 }
 
 AppModalDialogHelper::~AppModalDialogHelper() {
+  // TODO(johnme): Can we sometimes be certain this was for a user gesture?
   if (popup_)
-    popup_->GetDelegate()->ActivateContents(popup_);
+    popup_->GetDelegate()->ActivateContents(popup_, false /* user_gesture */);
 }
 
 void AppModalDialogHelper::WebContentsDestroyed() {
   popup_ = nullptr;
 }