Corresponding change in Pepper since EnumerateDevices contract is changed.

webkit/plugins/ppapi/ppb_audio_input_impl.cc

Index: webkit/plugins/ppapi/ppb_audio_input_impl.cc
===================================================================
--- webkit/plugins/ppapi/ppb_audio_input_impl.cc	(revision 148913)
+++ webkit/plugins/ppapi/ppb_audio_input_impl.cc	(working copy)
@@ -111,13 +111,25 @@
 
   devices_ = devices;
   enumerate_devices_callback_ = callback;
-  plugin_delegate->EnumerateDevices(
+  enumeration_request_id_ = plugin_delegate->EnumerateDevices(
       PP_DEVICETYPE_DEV_AUDIOCAPTURE,
       base::Bind(&PPB_AudioInput_Impl::EnumerateDevicesCallbackFunc,
                  AsWeakPtr()));
   return PP_OK_COMPLETIONPENDING;
 }
 
+int32_t PPB_AudioInput_Impl::InternalStopEnumerateDevices(
+    PP_Resource* devices) {
+  PluginDelegate* plugin_delegate = ResourceHelper::GetPluginDelegate(this);
+  if (!plugin_delegate)
+    return PP_ERROR_FAILED;
+
+  if (devices_ == devices) {
+    plugin_delegate->StopEnumerateDevices(enumeration_request_id_);
+  }
+  return PP_OK;
+}
+
 int32_t PPB_AudioInput_Impl::InternalOpen(
     const std::string& device_id,
     PP_AudioSampleRate sample_rate,