Web MIDI: move MIDI message validating logic into message_util.{cc|h}

content/browser/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_MEDIA_MIDI_HOST_H_
 #define CONTENT_BROWSER_MEDIA_MIDI_HOST_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 52 matching lines @@
   void OnSendData(uint32_t port,
                   const std::vector<uint8_t>& data,
                   double timestamp);
 
   void OnEndSession();
 
  protected:
   ~MidiHost() override;
 
  private:
-  FRIEND_TEST_ALL_PREFIXES(MidiHostTest, IsValidWebMIDIData);
   friend class base::DeleteHelper<MidiHost>;
   friend class BrowserThread;
 
-  // Returns true if |data| fulfills the requirements of MidiOutput.send API
-  // defined in the Web MIDI spec.
-  // - |data| must be any number of complete MIDI messages (data abbreviation
-  //    called "running status" is disallowed).
-  // - 1-byte MIDI realtime messages can be placed at any position of |data|.
-  static bool IsValidWebMIDIData(const std::vector<uint8_t>& data);
-
   int renderer_process_id_;
 
   // Represents if the renderer has a permission to send/receive MIDI SysEX
   // messages.
   bool has_sys_ex_permission_;
 
   // Represents if a session is requested to start.
   bool is_session_requested_;
 
   // |midi_manager_| talks to the platform-specific MIDI APIs.
@@ skipping 25 matching lines @@
 
   // Protects access to |output_port_count_|.
   base::Lock output_port_count_lock_;
 
   DISALLOW_COPY_AND_ASSIGN(MidiHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEDIA_MIDI_HOST_H_