Fix out-of-memory crashes related to ArrayBuffer allocation

third_party/WebKit/Source/modules/webmidi/MIDIInput.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 72 matching lines @@
         return;
 
     if (getConnection() != ConnectionStateOpen)
         return;
 
     // Drop sysex message here when the client does not request it. Note that this is not a security check but an
     // automatic filtering for clients that do not want sysex message. Also note that sysex message will never be sent
     // unless the current process has an explicit permission to handle sysex message.
     if (data[0] == 0xf0 && !midiAccess()->sysexEnabled())
         return;
-    RefPtr<DOMUint8Array> array = DOMUint8Array::create(data, length);
-    dispatchEvent(MIDIMessageEvent::create(timeStamp, array));
+    RefPtr<DOMUint8Array> array = DOMUint8Array::createOrNull(data, length);
+    // Silently fail if array allocation failed (out of memory).
+    if (array)
+        dispatchEvent(MIDIMessageEvent::create(timeStamp, array.release()));
 }
 
 DEFINE_TRACE(MIDIInput)
 {
     MIDIPort::trace(visitor);
 }
 
 } // namespace blink