Extract ChromeBrowserFieldTrials out of ChromeBrowserMainParts.

chrome/browser/chrome_browser_field_trials.h

+// 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.
+
+#ifndef CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_
+#define CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_
+
+#include "base/basictypes.h"
+#include "base/command_line.h"
+#include "base/gtest_prod_util.h"
+
+class ChromeBrowserFieldTrials {
+ public:
+  explicit ChromeBrowserFieldTrials(const CommandLine& command_line);
+  ~ChromeBrowserFieldTrials();
+
+  // Add an invocation of your field trial init function to this method.
+  void SetupFieldTrials(bool proxy_policy_is_set);
+
+ private:
+  FRIEND_TEST_ALL_PREFIXES(BrowserMainTest,
+                           WarmConnectionFieldTrial_WarmestSocket);
+  FRIEND_TEST_ALL_PREFIXES(BrowserMainTest, WarmConnectionFieldTrial_Random);
+  FRIEND_TEST_ALL_PREFIXES(BrowserMainTest, WarmConnectionFieldTrial_Invalid);
+
+  // A/B test for the maximum number of persistent connections per host.
+  void ConnectionFieldTrial();
+
+  // A/B test for determining a value for unused socket timeout.
+  void SocketTimeoutFieldTrial();
+
+  // A/B test for the maximum number of connections per proxy server.
+  void ProxyConnectionsFieldTrial();
+
+  // A/B test for spdy when --use-spdy not set.
+  void SpdyFieldTrial();
+
+  // A/B test for warmest socket vs. most recently used socket.
+  void WarmConnectionFieldTrial();
+
+  // A/B test for automatically establishing a backup TCP connection when a
+  // specified timeout value is reached.
+  void ConnectBackupJobsFieldTrial();
+
+  // Field trial to see what disabling DNS pre-resolution does to
+  // latency of page loads.
+  void PredictorFieldTrial();
+
+  // Field trial to see what effect installing defaults in the NTP apps pane
+  // has on retention and general apps/webstore usage.
+  void DefaultAppsFieldTrial();
+
+  // A field trial to see what effects launching Chrome automatically on
+  // computer startup has on retention and usage of Chrome.
+  void AutoLaunchChromeFieldTrial();
+
+  // A collection of one-time-randomized and session-randomized field trials
+  // intended to test the uniformity and correctness of the field trial control,
+  // bucketing and reporting systems.
+  void SetupUniformityFieldTrials();
+
+  // Disables the new tab field trial if not running in desktop mode.
+  void DisableNewTabFieldTrialIfNecesssary();
+
+  // Field trial for testing TLS channel id.
+  void ChannelIDFieldTrial();
+
+  const CommandLine& parsed_command_line_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeBrowserFieldTrials);
+};
+
+#endif  // CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_