Componentize component_updater: Replace content::BrowserThread usage with task runners

chrome/browser/component_updater/component_updater_configurator.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.
 
 #include "chrome/browser/component_updater/component_updater_configurator.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/strings/string_util.h"
 #include "base/version.h"
 #include "build/build_config.h"
 #include "chrome/browser/omaha_query_params/chrome_omaha_query_params_delegate.h"
 #include "chrome/common/chrome_version_info.h"
 #include "components/component_updater/component_updater_switches.h"
+#include "content/public/browser/browser_thread.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "url/gurl.h"
 
 namespace component_updater {
 
 namespace {
 
 // Default time constants.
 const int kDelayOneMinute = 60;
 const int kDelayOneHour = kDelayOneMinute * 60;
@@ skipping 78 matching lines @@
   virtual base::Version GetBrowserVersion() const OVERRIDE;
   virtual std::string GetChannel() const OVERRIDE;
   virtual std::string GetLang() const OVERRIDE;
   virtual std::string GetOSLongName() const OVERRIDE;
   virtual std::string ExtraRequestParams() const OVERRIDE;
   virtual size_t UrlSizeLimit() const OVERRIDE;
   virtual net::URLRequestContextGetter* RequestContext() const OVERRIDE;
   virtual bool InProcess() const OVERRIDE;
   virtual bool DeltasEnabled() const OVERRIDE;
   virtual bool UseBackgroundDownloader() const OVERRIDE;
+  virtual scoped_refptr<base::SequencedTaskRunner> GetSequencedTaskRunner()
+      const OVERRIDE;
+  virtual scoped_refptr<base::SingleThreadTaskRunner>
+      GetSingleThreadTaskRunner() const OVERRIDE;
 
  private:
   net::URLRequestContextGetter* url_request_getter_;
   std::string extra_info_;
   std::string url_source_;
   bool fast_update_;
   bool pings_enabled_;
   bool deltas_enabled_;
   bool background_downloads_enabled_;
 };
@@ skipping 96 matching lines @@
 }
 
 bool ChromeConfigurator::DeltasEnabled() const {
   return deltas_enabled_;
 }
 
 bool ChromeConfigurator::UseBackgroundDownloader() const {
   return background_downloads_enabled_;
 }
 
+scoped_refptr<base::SequencedTaskRunner>
+ChromeConfigurator::GetSequencedTaskRunner() const {
+  return content::BrowserThread::GetBlockingPool()
+      ->GetSequencedTaskRunnerWithShutdownBehavior(
+          content::BrowserThread::GetBlockingPool()->GetSequenceToken(),
+          base::SequencedWorkerPool::SKIP_ON_SHUTDOWN);
+}
+
+scoped_refptr<base::SingleThreadTaskRunner>
+ChromeConfigurator::GetSingleThreadTaskRunner() const {
+  return content::BrowserThread::GetMessageLoopProxyForThread(
+      content::BrowserThread::FILE);
+}
+
 Configurator* MakeChromeComponentUpdaterConfigurator(
     const base::CommandLine* cmdline,
     net::URLRequestContextGetter* context_getter) {
   return new ChromeConfigurator(cmdline, context_getter);
 }
 
 }  // namespace component_updater