Create a about handler component.

Create a about handler component.
The following files ::
  chrome/browser/net/about_protocol_handler.*
  net/url_request/url_request_about_job.*
moved to new component: components/about_handler.
Also added GYP and GN file for same.

BUG=516695

Review URL: https://codereview.chromium.org/1284173003

Cr-Commit-Position: refs/heads/master@{#343366}

3 files changed, 0 insertions, 81 deletions

diff --git a/net/net.gypi b/net/net.gypi
index ef933fa..5ad6e7d 100644
--- a/net/net.gypi
+++ b/net/net.gypi
@@ -1208,8 +1208,6 @@
       'url_request/url_range_request_job.h',
       'url_request/url_request.cc',
       'url_request/url_request.h',
-      'url_request/url_request_about_job.cc',
-      'url_request/url_request_about_job.h',
       'url_request/url_request_context.cc',
       'url_request/url_request_context.h',
       'url_request/url_request_context_builder.cc',
diff --git a/net/url_request/url_request_about_job.cc b/net/url_request/url_request_about_job.cc
deleted file mode 100644
index 5619316..0000000
--- a/net/url_request/url_request_about_job.cc
+++ /dev/null
@@ -1,45 +0,0 @@
-// 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 about: protocol handler that treats everything as
-// about:blank.  No other about: features should be available to web content,
-// so they're not implemented here.
-
-#include "net/url_request/url_request_about_job.h"
-
-#include "base/bind.h"
-#include "base/compiler_specific.h"
-#include "base/location.h"
-#include "base/single_thread_task_runner.h"
-#include "base/thread_task_runner_handle.h"
-
-namespace net {
-
-URLRequestAboutJob::URLRequestAboutJob(URLRequest* request,
-                                       NetworkDelegate* network_delegate)
-    : URLRequestJob(request, network_delegate),
-      weak_factory_(this) {
-}
-
-void URLRequestAboutJob::Start() {
-  // Start reading asynchronously so that all error reporting and data
-  // callbacks happen as they would for network requests.
-  base::ThreadTaskRunnerHandle::Get()->PostTask(
-      FROM_HERE,
-      base::Bind(&URLRequestAboutJob::StartAsync, weak_factory_.GetWeakPtr()));
-}
-
-bool URLRequestAboutJob::GetMimeType(std::string* mime_type) const {
-  *mime_type = "text/html";
-  return true;
-}
-
-URLRequestAboutJob::~URLRequestAboutJob() {
-}
-
-void URLRequestAboutJob::StartAsync() {
-  NotifyHeadersComplete();
-}
-
-}  // namespace net
diff --git a/net/url_request/url_request_about_job.h b/net/url_request/url_request_about_job.h
deleted file mode 100644
index 36778b8..0000000
--- a/net/url_request/url_request_about_job.h
+++ /dev/null
@@ -1,34 +0,0 @@
-// Copyright (c) 2011 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.
-
-#ifndef NET_URL_REQUEST_URL_REQUEST_ABOUT_JOB_H_
-#define NET_URL_REQUEST_URL_REQUEST_ABOUT_JOB_H_
-
-#include <string>
-
-#include "base/memory/weak_ptr.h"
-#include "net/url_request/url_request.h"
-#include "net/url_request/url_request_job.h"
-
-namespace net {
-
-class NET_EXPORT URLRequestAboutJob : public URLRequestJob {
- public:
-  URLRequestAboutJob(URLRequest* request, NetworkDelegate* network_delegate);
-
-  // URLRequestJob:
-  void Start() override;
-  bool GetMimeType(std::string* mime_type) const override;
-
- private:
-  ~URLRequestAboutJob() override;
-
-  void StartAsync();
-
-  base::WeakPtrFactory<URLRequestAboutJob> weak_factory_;
-};
-
-}  // namespace net
-
-#endif  // NET_URL_REQUEST_URL_REQUEST_ABOUT_JOB_H_