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

content/renderer/media/renderer_webmidiaccessor_impl.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_RENDERER_WEBMIDIACCESSOR_IMPL_H_
 #define CONTENT_RENDERER_MEDIA_RENDERER_WEBMIDIACCESSOR_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "third_party/WebKit/public/platform/WebMIDIAccessor.h"
 #include "third_party/WebKit/public/platform/WebMIDIAccessorClient.h"
 
 namespace content {
 
 class MIDIMessageFilter;
 
 class RendererWebMIDIAccessorImpl
     : public WebKit::WebMIDIAccessor {
  public:
   explicit RendererWebMIDIAccessorImpl(
       WebKit::WebMIDIAccessorClient* client);
   virtual ~RendererWebMIDIAccessorImpl();
 
   // WebKit::WebMIDIAccessor implementation.
-  virtual void requestAccess(bool access) OVERRIDE;
+  // TODO(toyoshim): Remove the single-argument version of requestAccess once
+  // Blink side API change is rolled.
+  virtual void requestAccess(bool access);
+  virtual void requestAccess(const WebKit::WebString& origin,
+                             bool access);
   virtual void sendMIDIData(unsigned port_index,
                             const unsigned char* data,
                             size_t length,
                             double timestamp) OVERRIDE;
 
  private:
   WebKit::WebMIDIAccessorClient* client_;
 
   MIDIMessageFilter* midi_message_filter();
 
   DISALLOW_COPY_AND_ASSIGN(RendererWebMIDIAccessorImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_RENDERER_WEBMIDIACCESSOR_IMPL_H_