Revert of Move fetching logic out of ApplicationManager, eliminate url mappings.

mojo/fetcher/about_fetcher.cc

Index: mojo/fetcher/about_fetcher.cc
diff --git a/mojo/fetcher/about_fetcher.cc b/mojo/fetcher/about_fetcher.cc
deleted file mode 100644
index ba3fed8396c2c0fb4f2693852f97b37a25117bd8..0000000000000000000000000000000000000000
--- a/mojo/fetcher/about_fetcher.cc
+++ /dev/null
@@ -1,111 +0,0 @@
-// Copyright 2015 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/fetcher/about_fetcher.h"
-
-#include "base/bind.h"
-#include "base/files/file_path.h"
-#include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/message_loop/message_loop.h"
-
-namespace mojo {
-namespace fetcher {
-namespace {
-
-void RunFetcherCallback(const shell::Fetcher::FetchCallback& callback,
-                        scoped_ptr<shell::Fetcher> fetcher,
-                        bool success) {
-  callback.Run(success ? fetcher.Pass() : nullptr);
-}
-
-}  // namespace
-
-const char AboutFetcher::kAboutScheme[] = "about";
-const char AboutFetcher::kAboutBlankURL[] = "about:blank";
-
-// static
-void AboutFetcher::Start(const GURL& url,
-                         const FetchCallback& loader_callback) {
-  // The object manages its own lifespan.
-  new AboutFetcher(url, loader_callback);
-}
-
-AboutFetcher::AboutFetcher(const GURL& url,
-                           const FetchCallback& loader_callback)
-    : Fetcher(loader_callback), url_(url) {
-  BuildResponse();
-}
-
-AboutFetcher::~AboutFetcher() {}
-
-void AboutFetcher::BuildResponse() {
-  if (url_ != GURL(kAboutBlankURL)) {
-    PostToRunCallback(false);
-    return;
-  }
-
-  response_ = URLResponse::New();
-  response_->url = kAboutBlankURL;
-  response_->status_code = 200;
-  response_->mime_type = "text/html";
-  PostToRunCallback(true);
-}
-
-void AboutFetcher::PostToRunCallback(bool success) {
-  // Also pass |this| on failure, so that we won't destroy the object while the
-  // constructor is still on the call stack.
-  base::MessageLoop::current()->PostTask(
-      FROM_HERE,
-      base::Bind(RunFetcherCallback, loader_callback_,
-                 base::Passed(make_scoped_ptr<Fetcher>(this)), success));
-}
-
-const GURL& AboutFetcher::GetURL() const {
-  return url_;
-}
-
-GURL AboutFetcher::GetRedirectURL() const {
-  return GURL::EmptyGURL();
-}
-
-GURL AboutFetcher::GetRedirectReferer() const {
-  return GURL::EmptyGURL();
-}
-
-URLResponsePtr AboutFetcher::AsURLResponse(base::TaskRunner* task_runner,
-                                           uint32_t skip) {
-  DCHECK(response_);
-
-  // Ignore |skip| because the only URL handled currently is "about:blank" which
-  // doesn't have a body.
-  DCHECK(!response_->body.is_valid());
-
-  return response_.Pass();
-}
-
-void AboutFetcher::AsPath(
-    base::TaskRunner* task_runner,
-    base::Callback<void(const base::FilePath&, bool)> callback) {
-  NOTIMPLEMENTED();
-  base::MessageLoop::current()->PostTask(
-      FROM_HERE, base::Bind(callback, base::FilePath(), false));
-}
-
-std::string AboutFetcher::MimeType() {
-  DCHECK(response_);
-  return response_->mime_type;
-}
-
-bool AboutFetcher::HasMojoMagic() {
-  return false;
-}
-
-bool AboutFetcher::PeekFirstLine(std::string* line) {
-  // The only URL handled currently is "about:blank" which doesn't have a body.
-  return false;
-}
-
-}  // namespace fetcher
-}  // namespace mojo