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// 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"
#include "base/time.h"
class PrefService;
class ChromeBrowserFieldTrials {
public:
explicit ChromeBrowserFieldTrials(const CommandLine& command_line);
~ChromeBrowserFieldTrials();
// Called by the browser main sequence to set up Field Trials for this client.
// |local_state| is used to extract properties like install time.
void SetupFieldTrials(PrefService* local_state);
private:
FRIEND_TEST_ALL_PREFIXES(BrowserMainTest,
WarmConnectionFieldTrial_WarmestSocket);
FRIEND_TEST_ALL_PREFIXES(BrowserMainTest, WarmConnectionFieldTrial_Random);
FRIEND_TEST_ALL_PREFIXES(BrowserMainTest, WarmConnectionFieldTrial_Invalid);
// Sets up common desktop-only field trials.
// Add an invocation of your field trial init function to this method, or to
// SetupFieldTrials if it is for all platforms.
// |local_state| is needed by some other methods called from within this one.
void SetupDesktopFieldTrials(PrefService* local_state);
// This is not quite a field trial initialization, but it's an initialization
// that depends on a field trial, so why not? :-)
// |local_state| is needed to reset a local pref based on the chosen group.
void SetupAppLauncherFieldTrial(PrefService* local_state);
// 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();
// Field trial to see what disabling DNS pre-resolution does to
// latency of page loads.
void PredictorFieldTrial();
// 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(const base::Time& install_date);
// Sets up the InfiniteCache field trial.
void SetUpInfiniteCacheFieldTrial();
// Sets up field trials for doing Cache Sensitivity Analysis.
void SetUpCacheSensitivityAnalysisFieldTrial();
// Disables the show profile switcher field trial if multi-profiles is not
// enabled.
void DisableShowProfileSwitcherTrialIfNecessary();
// A field trial to determine the impact of using non-blocking reads for
// TCP sockets on Windows instead of overlapped I/O.
void WindowsOverlappedTCPReadsFieldTrial();
// A field trial to check the simple cache performance.
void SetUpSimpleCacheFieldTrial();
// Instantiates dynamic trials by querying their state, to ensure they get
// reported as used.
void InstantiateDynamicTrials();
const CommandLine& parsed_command_line_;
DISALLOW_COPY_AND_ASSIGN(ChromeBrowserFieldTrials);
};
#endif // CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_
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