Extract some stuff into PackageManager

mojo/fetcher/base_application_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/base_application_fetcher.h"
-
-#include "mojo/fetcher/about_fetcher.h"
-#include "mojo/fetcher/local_fetcher.h"
-#include "mojo/fetcher/network_fetcher.h"
-#include "mojo/fetcher/switches.h"
-#include "mojo/fetcher/update_fetcher.h"
-#include "mojo/shell/application_manager.h"
-#include "mojo/shell/query_util.h"
-#include "mojo/util/filename_util.h"
-#include "url/gurl.h"
-
-namespace mojo {
-namespace fetcher {
-
-BaseApplicationFetcher::BaseApplicationFetcher(
-    const base::FilePath& shell_file_root)
-    : application_manager_(nullptr),
-      disable_cache_(base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kDisableCache)) {
-  if (!shell_file_root.empty()) {
-    GURL mojo_root_file_url =
-        util::FilePathToFileURL(shell_file_root).Resolve(std::string());
-    url_resolver_.reset(new URLResolver(mojo_root_file_url));
-  }
-}
-
-BaseApplicationFetcher::~BaseApplicationFetcher() {
-}
-
-void BaseApplicationFetcher::SetApplicationManager(
-    shell::ApplicationManager* manager) {
-  application_manager_ = manager;
-}
-
-GURL BaseApplicationFetcher::ResolveURL(const GURL& url) {
-  return url_resolver_.get() ? url_resolver_->ResolveMojoURL(url) : url;
-}
-
-void BaseApplicationFetcher::FetchRequest(
-    URLRequestPtr request,
-    const shell::Fetcher::FetchCallback& loader_callback) {
-  GURL url(request->url);
-  if (url.SchemeIs(AboutFetcher::kAboutScheme)) {
-    AboutFetcher::Start(url, loader_callback);
-    return;
-  }
-
-  GURL resolved_url = ResolveURL(url);
-
-  if (resolved_url.SchemeIsFile()) {
-    // LocalFetcher uses the network service to infer MIME types from URLs.
-    // Skip this for mojo URLs to avoid recursively loading the network service.
-    if (!network_service_ && !url.SchemeIs("mojo")) {
-      application_manager_->ConnectToService(GURL("mojo:network_service"),
-                                            &network_service_);
-    }
-    // Ownership of this object is transferred to |loader_callback|.
-    // TODO(beng): this is eff'n weird.
-    new LocalFetcher(
-        network_service_.get(), resolved_url,
-        shell::GetBaseURLAndQuery(resolved_url, nullptr),
-        loader_callback);
-    return;
-  }
-
-#if 0
-  // TODO(beng): figure out how this should be integrated now that mapped_url
-  //             is toast.
-  // TODO(scottmg): to quote someone I know, if you liked this you shouldda put
-  //                a test on it.
-  if (url.SchemeIs("mojo") &&
-      base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kUseUpdater)) {
-    application_manager_->ConnectToService(GURL("mojo:updater"), &updater_);
-    // Ownership of this object is transferred to |loader_callback|.
-    // TODO(beng): this is eff'n weird.
-    new UpdateFetcher(url, updater_.get(), loader_callback);
-    return;
-  }
-#endif
-
-  if (!url_loader_factory_) {
-    application_manager_->ConnectToService(GURL("mojo:network_service"),
-                                           &url_loader_factory_);
-  }
-
-  // Ownership of this object is transferred to |loader_callback|.
-  // TODO(beng): this is eff'n weird.
-  new NetworkFetcher(disable_cache_, request.Pass(), url_loader_factory_.get(),
-                     loader_callback);
-}
-
-}  // namespace fetcher
-}  // namespace mojo