Move fetchers into mojo/shell/fetcher

mojo/fetcher/update_fetcher.cc

-// 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/update_fetcher.h"
-
-#include <stddef.h>
-#include <stdint.h>
-
-#include <utility>
-
-#include "base/bind.h"
-#include "base/files/file_util.h"
-#include "base/format_macros.h"
-#include "base/message_loop/message_loop.h"
-#include "base/strings/stringprintf.h"
-#include "mojo/common/common_type_converters.h"
-#include "mojo/common/data_pipe_utils.h"
-#include "mojo/common/url_type_converters.h"
-
-namespace mojo {
-namespace fetcher {
-
-namespace {
-void IgnoreResult(bool result) {
-}
-
-}  // namespace
-UpdateFetcher::UpdateFetcher(const GURL& url,
-                             updater::Updater* updater,
-                             const FetchCallback& loader_callback)
-    : Fetcher(loader_callback), url_(url), weak_ptr_factory_(this) {
-  DVLOG(1) << "updating: " << url_;
-  updater->GetPathForApp(
-      url.spec(),
-      base::Bind(&UpdateFetcher::OnGetAppPath, weak_ptr_factory_.GetWeakPtr()));
-}
-
-UpdateFetcher::~UpdateFetcher() {
-}
-
-const GURL& UpdateFetcher::GetURL() const {
-  return url_;
-}
-
-GURL UpdateFetcher::GetRedirectURL() const {
-  return GURL::EmptyGURL();
-}
-
-GURL UpdateFetcher::GetRedirectReferer() const {
-  return GURL::EmptyGURL();
-}
-URLResponsePtr UpdateFetcher::AsURLResponse(base::TaskRunner* task_runner,
-                                            uint32_t skip) {
-  URLResponsePtr response(URLResponse::New());
-  response->url = String::From(url_);
-  DataPipe data_pipe;
-  response->body = std::move(data_pipe.consumer_handle);
-  int64_t file_size;
-  if (base::GetFileSize(path_, &file_size)) {
-    response->headers = Array<HttpHeaderPtr>(1);
-    HttpHeaderPtr header = HttpHeader::New();
-    header->name = "Content-Length";
-    header->value = base::StringPrintf("%" PRId64, file_size);
-    response->headers[0] = std::move(header);
-  }
-  common::CopyFromFile(path_, std::move(data_pipe.producer_handle), skip,
-                       task_runner, base::Bind(&IgnoreResult));
-  return response;
-}
-
-void UpdateFetcher::AsPath(
-    base::TaskRunner* task_runner,
-    base::Callback<void(const base::FilePath&, bool)> callback) {
-  base::MessageLoop::current()->PostTask(
-      FROM_HERE, base::Bind(callback, path_, base::PathExists(path_)));
-}
-
-std::string UpdateFetcher::MimeType() {
-  return "";
-}
-
-bool UpdateFetcher::HasMojoMagic() {
-  std::string magic;
-  ReadFileToString(path_, &magic, strlen(kMojoMagic));
-  return magic == kMojoMagic;
-}
-
-bool UpdateFetcher::PeekFirstLine(std::string* line) {
-  std::string start_of_file;
-  ReadFileToString(path_, &start_of_file, kMaxShebangLength);
-  size_t return_position = start_of_file.find('\n');
-  if (return_position == std::string::npos)
-    return false;
-  *line = start_of_file.substr(0, return_position + 1);
-  return true;
-}
-
-void UpdateFetcher::OnGetAppPath(const mojo::String& path) {
-  path_ = base::FilePath::FromUTF8Unsafe(path);
-  loader_callback_.Run(make_scoped_ptr(this));
-}
-
-}  // namespace fetcher
-}  // namespace mojo