Disable Notifications in Incognito

chrome/browser/notifications/notification_permission_context.cc

 // Copyright 2015 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/notification_permission_context.h"
 
+#include "base/prefs/pref_service.h"
+#include "chrome/browser/content_settings/host_content_settings_map_factory.h"
+#include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/notifications/desktop_notification_profile_util.h"
+#include "chrome/browser/notifications/incognito_denied_infobar_delegate.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/common/pref_names.h"
+#include "components/content_settings/core/browser/host_content_settings_map.h"
 #include "components/content_settings/core/common/content_settings_pattern.h"
+#include "content/public/browser/browser_thread.h"
 #include "url/gurl.h"
 
+namespace {
+
+void RunClosureIgnoringBools(const base::Closure& closure,
+                             bool ignored_a, bool ignored_b) {
+  closure.Run();
+}
+
+}  // namespace
+
 NotificationPermissionContext::NotificationPermissionContext(Profile* profile)
     : PermissionContextBase(profile, CONTENT_SETTINGS_TYPE_NOTIFICATIONS) {}
 
 NotificationPermissionContext::~NotificationPermissionContext() {}
 
 void NotificationPermissionContext::ResetPermission(
     const GURL& requesting_origin,
     const GURL& embedder_origin) {
   DesktopNotificationProfileUtil::ClearSetting(
       profile(), ContentSettingsPattern::FromURLNoWildcard(requesting_origin));
 }
 
+void NotificationPermissionContext::DecidePermission(
+    content::WebContents* web_contents,
+    const PermissionRequestID& id,
+    const GURL& requesting_origin,
+    const GURL& embedding_origin,
+    bool user_gesture,
+    const BrowserPermissionCallback& callback) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+  if (!profile()->IsOffTheRecord()) {

[mlamouri (slow - plz ping), 2015/11/28 17:00:54]

nit: I think it's nice to have the special case first. I would do `if
(profile()->IsOffTheRecord()). It's clearer and would make the comment more
visible. 

[johnme, 2015/11/30 15:37:20]

Usually I prefer to keep the short early-out first. But sure, done.

+    PermissionContextBase::DecidePermission(web_contents, id, requesting_origin,
+                                            embedding_origin, user_gesture,
+                                            callback);
+    return;
+  }
+  // Notifications are disabled in incognito, so show a custom infobar which
+  // explains this to the user, and denies permission once the infobar is
+  // dismissed (the permission has to start off as ASK to prevent websites
+  // from detecting incognito mode).
+  base::Closure deny_closure =
+      base::Bind(&HostContentSettingsMap::SetContentSetting,
+                 HostContentSettingsMapFactory::GetForProfile(profile()),
+                 ContentSettingsPattern::FromURLNoWildcard(
+                     requesting_origin.GetOrigin()),
+                 ContentSettingsPattern::Wildcard(),
+                 CONTENT_SETTINGS_TYPE_NOTIFICATIONS,
+                 std::string(),
+                 CONTENT_SETTING_BLOCK);
+  IncognitoDeniedInfobarDelegate::Create(

[mlamouri (slow - plz ping), 2015/11/28 17:00:54]

I thought we were moving infobar out on Desktop. Using an infobar on Desktop in
something the UI stackholders approved?

[johnme, 2015/11/30 15:37:20]

I'll double-check with them before landing.

+      InfoBarService::FromWebContents(web_contents), requesting_origin,
+      profile()->GetPrefs()->GetString(prefs::kAcceptLanguages),
+      base::Bind(&RunClosureIgnoringBools, deny_closure));

[mlamouri (slow - plz ping), 2015/11/28 17:00:54]

Instead of having this closure to re-route while ignoring the bools, maybe you
could avoid the double bind and simply call the method in a
OnIncognitoDeniedAction callback? Would be slightly easier to comprehend too
(RunClosureIgnoringBool at the top is slightly mysterious ;)).

[johnme, 2015/11/30 15:37:20]

Done (heh, yeah, realised this myself when mulling over one of your previous
comments).

+}
+
 // Unlike other permission types, granting a notification for a given origin
 // will not take into account the |embedder_origin|, it will only be based
 // on the requesting iframe origin.
 // TODO(mukai) Consider why notifications behave differently than
 // other permissions. https://crbug.com/416894
 void NotificationPermissionContext::UpdateContentSetting(
     const GURL& requesting_origin,
     const GURL& embedder_origin,
     ContentSetting content_setting) {
   DCHECK(content_setting == CONTENT_SETTING_ALLOW ||
          content_setting == CONTENT_SETTING_BLOCK);
 
   if (content_setting == CONTENT_SETTING_ALLOW) {
     DesktopNotificationProfileUtil::GrantPermission(profile(),
                                                     requesting_origin);
   } else {
     DesktopNotificationProfileUtil::DenyPermission(profile(),
                                                    requesting_origin);
   }
 }
 
 bool NotificationPermissionContext::IsRestrictedToSecureOrigins() const {
   return false;
 }