Merge //content/child/permissions into Blink's permissions module.

content/child/permissions/permission_observers_registry.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 "content/child/permissions/permission_observers_registry.h"
-
-#include "third_party/WebKit/public/platform/modules/permissions/WebPermissionObserver.h"
-
-namespace content {
-
-PermissionObserversRegistry::PermissionObserversRegistry() {
-}
-
-PermissionObserversRegistry::~PermissionObserversRegistry() {
-}
-
-void PermissionObserversRegistry::RegisterObserver(
-    blink::WebPermissionObserver* observer) {
-  observers_.insert(observer);
-}
-
-void PermissionObserversRegistry::UnregisterObserver(
-    blink::WebPermissionObserver* observer) {
-  observers_.erase(observer);
-}
-
-bool PermissionObserversRegistry::IsObserverRegistered(
-    blink::WebPermissionObserver* observer) const {
-  return observers_.find(observer) != observers_.end();
-}
-
-}  // namespace content