Use MIDIMessageQueue/IsValidWebMIDIData for MIDI byte stream validation

content/browser/renderer_host/media/midi_host.h

 // 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_MEDIA_MIDI_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_MIDI_HOST_H_
 
 #include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "content/public/browser/browser_thread.h"
 #include "media/midi/midi_manager.h"
 
 namespace media {
 class MIDIManager;
+class MIDIMessageQueue;
 }
 
 namespace content {
 
 class CONTENT_EXPORT MIDIHost
     : public BrowserMessageFilter,
       public media::MIDIManagerClient {
  public:
   // Called from UI thread from the owner of this object.
   MIDIHost(int renderer_process_id, media::MIDIManager* midi_manager);
@@ skipping 20 matching lines @@
                   double timestamp);
 
  private:
   friend class base::DeleteHelper<MIDIHost>;
   friend class BrowserThread;
 
   virtual ~MIDIHost();
 
   int renderer_process_id_;
 
+  // Represents if the renderer has a permission to send/receive MIDI SysEX
+  // messages.
+  bool sysex_allowed_;
+
   // |midi_manager_| talks to the platform-specific MIDI APIs.
   // It can be NULL if the platform (or our current implementation)
   // does not support MIDI.  If not supported then a call to
   // OnRequestAccess() will always refuse access and a call to
   // OnSendData() will do nothing.
   media::MIDIManager* const midi_manager_;
 
+  // Buffers where data sent from each MIDI input port is stored.
+  ScopedVector<media::MIDIMessageQueue> received_messages_queues_;
+
   // The number of bytes sent to the platform-specific MIDI sending
   // system, but not yet completed.
   size_t sent_bytes_in_flight_;
 
   // The number of bytes successfully sent since the last time
   // we've acknowledged back to the renderer.
   size_t bytes_sent_since_last_acknowledgement_;
 
   // Protects access to |sent_bytes_in_flight_|.
   base::Lock in_flight_lock_;
 
   DISALLOW_COPY_AND_ASSIGN(MIDIHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_MIDI_HOST_H_