EDK: Rename DispatcherTransport to HandleTransport.

mojo/edk/system/handle_transport.cc

 // Copyright 2016 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.
 
 #include "mojo/edk/system/handle_transport.h"
 
 #include "base/logging.h"
 
 namespace mojo {
 namespace system {
 
-void DispatcherTransport::End() {
+void HandleTransport::End() {
   DCHECK(dispatcher_);
   dispatcher_->mutex_.Unlock();
   dispatcher_ = nullptr;
 }
 
 }  // namespace system
 }  // namespace mojo