Add ShouldDisplayOverFullscreen support to web notifications.

chrome/browser/notifications/web_notification_delegate.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 "chrome/browser/notifications/web_notification_delegate.h"
+
+#include "chrome/browser/notifications/notification_common.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_list.h"
+#include "chrome/browser/ui/browser_window.h"
+#include "chrome/browser/ui/exclusive_access/exclusive_access_context.h"
+#include "chrome/browser/ui/tabs/tab_strip_model.h"
+#include "content/public/browser/web_contents.h"
+
+WebNotificationDelegate::WebNotificationDelegate(
+    content::BrowserContext* browser_context,
+    const std::string& notification_id,
+    const GURL& origin)
+    : browser_context_(browser_context),
+      notification_id_(notification_id),
+      origin_(origin) {}
+
+WebNotificationDelegate::~WebNotificationDelegate() {}
+
+std::string WebNotificationDelegate::id() const {
+  return notification_id_;
+}
+
+void WebNotificationDelegate::SettingsClick() {
+  NotificationCommon::OpenNotificationSettings(browser_context_);
+}
+
+bool WebNotificationDelegate::ShouldDisplaySettingsButton() {
+  return true;
+}
+
+bool WebNotificationDelegate::ShouldDisplayOverFullscreen() const {
+#if !defined(OS_ANDROID)
+  Profile* profile = Profile::FromBrowserContext(browser_context_);
+  DCHECK(profile);
+  // Check to see if this notification comes from a webpage that is displaying
+  // fullscreen content.
+  for (auto* browser : *BrowserList::GetInstance()) {
+    // Only consider the browsers for the profile that created the notification
+    if (browser->profile() != profile)
+      continue;
+
+    const content::WebContents* active_contents =
+        browser->tab_strip_model()->GetActiveWebContents();
+    if (!active_contents)
+      continue;
+
+    // Check to see if
+    //  (a) the active tab in the browser shares its origin with the
+    //      notification.
+    //  (b) the browser is fullscreen
+    //  (c) the browser has focus.
+    if (active_contents->GetURL().GetOrigin() == origin_ &&
+        browser->exclusive_access_manager()->context()->IsFullscreen() &&
+        browser->window()->IsActive()) {
+      return true;
+    }
+  }
+#endif
+
+  return false;
+}