Fix Volume slider is captured in screenshot done in touchview mode

chromeos/dbus/fake_cras_audio_client.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 "chromeos/dbus/fake_cras_audio_client.h"
 
 namespace chromeos {
 
 FakeCrasAudioClient::FakeCrasAudioClient()
     : active_input_node_id_(0),
@@ skipping 209 matching lines @@
   FOR_EACH_OBSERVER(Observer, observers_, NodesChanged());
 }
 
 void FakeCrasAudioClient::NotifyOutputNodeVolumeChangedForTesting(
     uint64_t node_id,
     int volume) {
   FOR_EACH_OBSERVER(Observer, observers_,
                     OutputNodeVolumeChanged(node_id, volume));
 }
 
+void FakeCrasAudioClient::NotifyAudioClientRestartedForTesting(
+    const AudioNodeList& new_nodes) {
+  SetAudioNodesForTesting(new_nodes);
+  FOR_EACH_OBSERVER(Observer, observers_, AudioClientRestarted());
+}
+
 AudioNodeList::iterator FakeCrasAudioClient::FindNode(uint64_t node_id) {
   return std::find_if(
       node_list_.begin(), node_list_.end(),
       [node_id](const AudioNode& node) { return node_id == node.id; });
 }
 
 }  // namespace chromeos