Web MIDI: deprecate MIDIMessageEvent.receivedTime

third_party/WebKit/Source/modules/webmidi/MIDIAccess.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 173 matching lines @@
 }
 
 void MIDIAccess::didReceiveMIDIData(unsigned portIndex,
                                     const unsigned char* data,
                                     size_t length,
                                     double timeStamp) {
   DCHECK(isMainThread());
   if (portIndex >= m_inputs.size())
     return;
 
-  // Convert from time in seconds which is based on the time coordinate system
-  // of monotonicallyIncreasingTime() into time in milliseconds (a
-  // DOMHighResTimeStamp) according to the same time coordinate system as
-  // performance.now().  This is how timestamps are defined in the Web MIDI
-  // spec.
-  Document* document = toDocument(getExecutionContext());
-  DCHECK(document);
-
-  double timeStampInMilliseconds =
-      1000 *
-      document->loader()->timing().monotonicTimeToZeroBasedDocumentTime(
-          timeStamp);
-
-  m_inputs[portIndex]->didReceiveMIDIData(portIndex, data, length,
-                                          timeStampInMilliseconds);
+  m_inputs[portIndex]->didReceiveMIDIData(portIndex, data, length, timeStamp);
 }
 
 void MIDIAccess::sendMIDIData(unsigned portIndex,
                               const unsigned char* data,
                               size_t length,
                               double timeStampInMilliseconds) {
   if (!data || !length || portIndex >= m_outputs.size())
     return;
   // Convert from a time in milliseconds (a DOMHighResTimeStamp) according to
   // the same time coordinate system as performance.now() into a time in seconds
@@ skipping 21 matching lines @@
 }
 
 DEFINE_TRACE(MIDIAccess) {
   visitor->trace(m_inputs);
   visitor->trace(m_outputs);
   EventTargetWithInlineData::trace(visitor);
   ActiveDOMObject::trace(visitor);
 }
 
 }  // namespace blink