Ensure permission bubble is stacked below the exclusive access bubble.

chrome/browser/ui/views/website_settings/permissions_bubble_view_views.cc

 // Copyright 2016 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 "base/memory/ptr_util.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/views/exclusive_access_bubble_views.h"
 #include "chrome/browser/ui/views/frame/browser_view.h"
 #include "chrome/browser/ui/views/frame/top_container_view.h"
@@ skipping 18 matching lines @@
 gfx::Point PermissionBubbleViewViews::GetAnchorPoint() {
   return gfx::Point();
 }
 
 views::BubbleBorder::Arrow PermissionBubbleViewViews::GetAnchorArrow() {
   if (browser_->SupportsWindowFeature(Browser::FEATURE_LOCATIONBAR))
     return views::BubbleBorder::TOP_LEFT;
   return views::BubbleBorder::NONE;
 }
 
+gfx::NativeView PermissionBubbleViewViews::GetExclusiveAccessNativeView() {
+  BrowserView* browser_view = BrowserView::GetBrowserViewForBrowser(browser_);
+  if (!browser_view->IsFullscreenBubbleVisible())
+    return nullptr;
+
+  return browser_view->exclusive_access_bubble()->GetWidget()->GetNativeView();
+}
+
 // static
 std::unique_ptr<PermissionBubbleView> PermissionBubbleView::Create(
     Browser* browser) {
   return base::WrapUnique(new PermissionBubbleViewViews(browser));
 }