Permissions: glue between Mojo and Blink for permission observing.

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