Cleanup namespace usage in Source/web/Web[I-Z]*.cpp

Source/web/WebMIDIPermissionRequest.cpp

 /*
  * Copyright (C) 2013 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 19 matching lines @@
 
 #include "config.h"
 #include "public/web/WebMIDIPermissionRequest.h"
 
 #include "modules/webmidi/MIDIAccessInitializer.h"
 #include "platform/weborigin/SecurityOrigin.h"
 #include "public/web/WebSecurityOrigin.h"
 
 namespace blink {
 
-WebMIDIPermissionRequest::WebMIDIPermissionRequest(blink::MIDIAccessInitializer* initializer)
+WebMIDIPermissionRequest::WebMIDIPermissionRequest(MIDIAccessInitializer* initializer)
     : m_initializer(initializer)
 {
 }
 
 bool WebMIDIPermissionRequest::equals(const WebMIDIPermissionRequest& n) const
 {
     return m_initializer == n.m_initializer;
 }
 
 WebSecurityOrigin WebMIDIPermissionRequest::securityOrigin() const
 {
     return WebSecurityOrigin(m_initializer->securityOrigin());
 }
 
 void WebMIDIPermissionRequest::setIsAllowed(bool allowed)
 {
     m_initializer->setSysexEnabled(allowed);
 }
 
 } // namespace blink