Rename the drive: scheme with the externalfile: scheme.

chrome/browser/chromeos/drive/drive_protocol_handler.cc

-// Copyright (c) 2012 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 "chrome/browser/chromeos/drive/drive_protocol_handler.h"
-
-#include "base/logging.h"
-#include "chrome/browser/chromeos/drive/drive_url_request_job.h"
-#include "net/url_request/url_request.h"
-#include "url/gurl.h"
-
-namespace drive {
-
-DriveProtocolHandler::DriveProtocolHandler(void* profile_id)
-    : profile_id_(profile_id) {
-}
-
-DriveProtocolHandler::~DriveProtocolHandler() {
-}
-
-net::URLRequestJob* DriveProtocolHandler::MaybeCreateJob(
-    net::URLRequest* request, net::NetworkDelegate* network_delegate) const {
-  DVLOG(1) << "Handling url: " << request->url().spec();
-  return new DriveURLRequestJob(profile_id_, request, network_delegate);
-}
-
-}  // namespace drive