Move MIDI code to hang off WebFrame.

public/web/WebViewClient.h

 /*
  * Copyright (C) 2009 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 43 matching lines @@
 class WebDragData;
 class WebElement;
 class WebExternalPopupMenu;
 class WebExternalPopupMenuClient;
 class WebFileChooserCompletion;
 class WebGestureEvent;
 class WebHitTestResult;
 class WebImage;
 class WebInputElement;
 class WebKeyboardEvent;
-class WebMIDIClient;
 class WebNode;
 class WebPushClient;
 class WebRange;
 class WebSpeechRecognizer;
 class WebScreenOrientationClient;
 class WebStorageNamespace;
 class WebURL;
 class WebURLRequest;
 class WebView;
 class WebWidget;
@@ skipping 206 matching lines @@
 
     // Visibility -----------------------------------------------------------
 
     // Returns the current visibility of the WebView.
     virtual WebPageVisibilityState visibilityState() const
     {
         return WebPageVisibilityStateVisible;
     }
 
 
-    // Web MIDI -------------------------------------------------------------
-
-    virtual WebMIDIClient* webMIDIClient() { return 0; }
-
-
     // Push Messaging -------------------------------------------------------
 
     virtual WebPushClient* webPushClient() { return 0; }
 
     // Screen Orientation ---------------------------------------------------
 
     virtual WebScreenOrientationClient* webScreenOrientationClient()
     {
         return 0;
     }
@@ skipping 18 matching lines @@
     // Informs the browser that the draggable regions have been updated.
     virtual void draggableRegionsChanged() { }
 
 protected:
     ~WebViewClient() { }
 };
 
 } // namespace blink
 
 #endif