Delete url_request_data_job.cc.

Somehow managed not to delete it in when I removed it from net/BUILD.gn
in https://chromium-review.googlesource.com/c/chromium/src/+/1869725.

Bug: 934009
Change-Id: I1a85d090064e472e04d9f7d9767d6f5399a767b1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1903830Reviewed-by: Eric Roman <eroman@chromium.org>
Commit-Queue: Matt Menke <mmenke@chromium.org>
Cr-Commit-Position: refs/heads/master@{#713668}

net/url_request/url_request_data_job.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.
-
-// Simple implementation of a data: protocol handler.
-
-#include "net/url_request/url_request_data_job.h"
-
-#include "net/base/data_url.h"
-#include "net/base/net_errors.h"
-#include "net/http/http_response_headers.h"
-#include "url/gurl.h"
-
-namespace net {
-
-int URLRequestDataJob::BuildResponse(const GURL& url,
-                                     base::StringPiece method,
-                                     std::string* mime_type,
-                                     std::string* charset,
-                                     std::string* data,
-                                     HttpResponseHeaders* headers) {
-  return DataURL::BuildResponse(url, method, mime_type, charset, data, headers);
-}
-
-URLRequestDataJob::URLRequestDataJob(
-    URLRequest* request, NetworkDelegate* network_delegate)
-    : URLRequestSimpleJob(request, network_delegate) {
-}
-
-int URLRequestDataJob::GetData(std::string* mime_type,
-                               std::string* charset,
-                               std::string* data,
-                               CompletionOnceCallback callback) const {
-  // Check if data URL is valid. If not, don't bother to try to extract data.
-  // Otherwise, parse the data from the data URL.
-  const GURL& url = request_->url();
-  if (!url.is_valid())
-    return ERR_INVALID_URL;
-
-  // TODO(tyoshino): Get the headers and export via
-  // URLRequestJob::GetResponseInfo().
-  return BuildResponse(url, request_->method(), mime_type, charset, data,
-                       nullptr);
-}
-
-URLRequestDataJob::~URLRequestDataJob() = default;
-
-}  // namespace net