Remove PPB_Ext_Alarms_Dev and PPB_Ext_Events_Dev.

ppapi/cpp/extensions/event_base.cc

-// Copyright (c) 2013 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 "ppapi/cpp/extensions/event_base.h"
-
-#include "ppapi/cpp/extensions/dev/events_dev.h"
-
-namespace pp {
-namespace ext {
-namespace internal {
-
-GenericEventBase::GenericEventBase(
-    const InstanceHandle& instance,
-    const PP_Ext_EventListener& pp_listener)
-    : instance_(instance),
-      listener_id_(0),
-      pp_listener_(pp_listener) {
-}
-
-GenericEventBase::~GenericEventBase() {
-  StopListening();
-}
-
-bool GenericEventBase::StartListening() {
-  if (IsListening())
-    return true;
-
-  listener_id_ = events::Events_Dev::AddListener(instance_.pp_instance(),
-                                                 pp_listener_);
-  return IsListening();
-}
-
-void GenericEventBase::StopListening() {
-  if (!IsListening())
-    return;
-
-  events::Events_Dev::RemoveListener(instance_.pp_instance(), listener_id_);
-  listener_id_ = 0;
-}
-
-}  // namespace internal
-}  // namespace ext
-}  // namespace pp