Web MIDI: prepare to pass a security origin from blink to browser

content/renderer/media/midi_message_filter.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_RENDERER_MEDIA_MIDI_MESSAGE_FILTER_H_
 #define CONTENT_RENDERER_MEDIA_MIDI_MESSAGE_FILTER_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 14 matching lines @@
 class CONTENT_EXPORT MIDIMessageFilter
     : public IPC::ChannelProxy::MessageFilter {
  public:
   explicit MIDIMessageFilter(
       const scoped_refptr<base::MessageLoopProxy>& io_message_loop);
 
   // Each client registers for MIDI access here.
   // If permission is granted, then the client's
   // addInputPort() and addOutputPort() methods will be called,
   // giving the client access to receive and send data.
-  void RequestAccess(WebKit::WebMIDIAccessorClient* client, int access);
+  void RequestAccess(const std::string& origin,
+                     WebKit::WebMIDIAccessorClient* client,
+                     int access);
   void RemoveClient(WebKit::WebMIDIAccessorClient* client);
 
   // A client will only be able to call this method if it has a suitable
   // output port (from addOutputPort()).
   void SendMIDIData(int port,
                     const uint8* data,
                     size_t length,
                     double timestamp);
 
   // IO message loop associated with this message filter.
@@ skipping 31 matching lines @@
   void HandleAccessApproved(int client_id,
                             int access,
                             bool success,
                             media::MIDIPortInfoList inputs,
                             media::MIDIPortInfoList outputs);
 
   void HandleDataReceived(int port,
                           const std::vector<uint8>& data,
                           double timestamp);
 
-  void RequestAccessOnIOThread(int client_id, int access);
+  void RequestAccessOnIOThread(const std::string& origin,
+                               int client_id,
+                               int access);
 
   void SendMIDIDataOnIOThread(int port,
                               const std::vector<uint8>& data,
                               double timestamp);
 
   WebKit::WebMIDIAccessorClient* GetClientFromId(int client_id);
 
   // IPC channel for Send(); must only be accessed on |io_message_loop_|.
   IPC::Channel* channel_;
 
@@ skipping 12 matching lines @@
 
   // Dishes out client ids.
   int next_available_id_;
 
   DISALLOW_COPY_AND_ASSIGN(MIDIMessageFilter);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_MIDI_MESSAGE_FILTER_H_