diff options
Diffstat (limited to 'chrome/browser/chrome_browser_field_trials.cc')
| -rw-r--r-- | chrome/browser/chrome_browser_field_trials.cc | 232 |
1 files changed, 12 insertions, 220 deletions
diff --git a/chrome/browser/chrome_browser_field_trials.cc b/chrome/browser/chrome_browser_field_trials.cc index 700f38d..6122086 100644 --- a/chrome/browser/chrome_browser_field_trials.cc +++ b/chrome/browser/chrome_browser_field_trials.cc @@ -6,35 +6,21 @@ #include <string> -#include "apps/field_trial_names.h" -#include "apps/pref_names.h" #include "base/command_line.h" #include "base/metrics/field_trial.h" #include "base/prefs/pref_service.h" #include "base/string_util.h" -#include "base/stringprintf.h" -#include "base/strings/string_number_conversions.h" -#include "base/strings/sys_string_conversions.h" -#include "base/utf_string_conversions.h" -#include "chrome/browser/auto_launch_trial.h" -#include "chrome/browser/google/google_util.h" -#include "chrome/browser/gpu/chrome_gpu_util.h" +#include "base/time.h" #include "chrome/browser/omnibox/omnibox_field_trial.h" -#include "chrome/browser/prerender/prerender_field_trial.h" -#include "chrome/browser/profiles/profile_manager.h" -#include "chrome/browser/safe_browsing/safe_browsing_blocking_page.h" -#include "chrome/browser/ui/sync/one_click_signin_helper.h" #include "chrome/common/chrome_switches.h" -#include "chrome/common/chrome_version_info.h" #include "chrome/common/metrics/variations/uniformity_field_trials.h" -#include "chrome/common/metrics/variations/variations_util.h" #include "chrome/common/pref_names.h" -#include "net/spdy/spdy_session.h" -#include "ui/base/layout.h" -#if defined(OS_WIN) -#include "net/socket/tcp_client_socket_win.h" -#endif // defined(OS_WIN) +#if defined(OS_ANDROID) || defined(OS_IOS) +#include "chrome/browser/chrome_browser_field_trials_mobile.h" +#else +#include "chrome/browser/chrome_browser_field_trials_desktop.h" +#endif ChromeBrowserFieldTrials::ChromeBrowserFieldTrials( const CommandLine& parsed_command_line) @@ -49,155 +35,18 @@ void ChromeBrowserFieldTrials::SetupFieldTrials(PrefService* local_state) { local_state->GetInt64(prefs::kInstallDate)); DCHECK(!install_time.is_null()); + // Field trials that are shared by all platforms. chrome_variations::SetupUniformityFieldTrials(install_time); SetUpSimpleCacheFieldTrial(); - -#if !defined(OS_ANDROID) && !defined(OS_IOS) - SetupDesktopFieldTrials(local_state); -#endif // !defined(OS_ANDROID) && !defined(OS_IOS) - -#if defined(OS_ANDROID) || defined(OS_IOS) - SetupMobileFieldTrials(); -#endif // defined(OS_ANDROID) || defined(OS_IOS) - InstantiateDynamicTrials(); -} - #if defined(OS_ANDROID) || defined(OS_IOS) -void ChromeBrowserFieldTrials::SetupMobileFieldTrials() { - DataCompressionProxyFieldTrial(); -} - -// Governs the rollout of the compression proxy for Chrome on mobile platforms. -// Always enabled in DEV and BETA versions. -// Stable percentage will be controlled from server. -void ChromeBrowserFieldTrials::DataCompressionProxyFieldTrial() { - const char kDataCompressionProxyFieldTrialName[] = - "DataCompressionProxyRollout"; - const base::FieldTrial::Probability kDataCompressionProxyDivisor = 1000; - - // 10/1000 = 1% for starters. - const base::FieldTrial::Probability kDataCompressionProxyStable = 10; - const char kEnabled[] = "Enabled"; - const char kDisabled[] = "Disabled"; - - // Find out if this is a stable channel. - const bool kIsStableChannel = - chrome::VersionInfo::GetChannel() == chrome::VersionInfo::CHANNEL_STABLE; - - // Experiment enabled until Jan 1, 2015. By default, disabled. - scoped_refptr<base::FieldTrial> trial( - base::FieldTrialList::FactoryGetFieldTrial( - kDataCompressionProxyFieldTrialName, kDataCompressionProxyDivisor, - kDisabled, 2015, 1, 1, NULL)); - - // We want our trial results to be persistent. - trial->UseOneTimeRandomization(); - // Non-stable channels will run with probability 1. - const int kEnabledGroup = trial->AppendGroup( - kEnabled, - kIsStableChannel ? - kDataCompressionProxyStable : kDataCompressionProxyDivisor); - - const int v = trial->group(); - VLOG(1) << "DataCompression proxy enabled group id: " << kEnabledGroup - << ". Selected group id: " << v; -} -#endif // defined(OS_ANDROID) || defined(OS_IOS) - -void ChromeBrowserFieldTrials::SetupDesktopFieldTrials( - PrefService* local_state) { - prerender::ConfigurePrefetchAndPrerender(parsed_command_line_); - SpdyFieldTrial(); - AutoLaunchChromeFieldTrial(); - gpu_util::InitializeCompositingFieldTrial(); - OmniboxFieldTrial::ActivateStaticTrials(); - SetUpInfiniteCacheFieldTrial(); - SetUpCacheSensitivityAnalysisFieldTrial(); - DisableShowProfileSwitcherTrialIfNecessary(); - WindowsOverlappedTCPReadsFieldTrial(); -#if defined(ENABLE_ONE_CLICK_SIGNIN) - OneClickSigninHelper::InitializeFieldTrial(); -#endif - SetupAppLauncherFieldTrial(local_state); -} - -void ChromeBrowserFieldTrials::SetupAppLauncherFieldTrial( - PrefService* local_state) { - if (base::FieldTrialList::FindFullName(apps::kLauncherPromoTrialName) == - apps::kResetShowLauncherPromoPrefGroupName) { - local_state->SetBoolean(apps::prefs::kShowAppLauncherPromo, true); - } -} - -// When --use-spdy not set, users will be in A/B test for spdy. -// group A (npn_with_spdy): this means npn and spdy are enabled. In case server -// supports spdy, browser will use spdy. -// group B (npn_with_http): this means npn is enabled but spdy won't be used. -// Http is still used for all requests. -// default group: no npn or spdy is involved. The "old" non-spdy -// chrome behavior. -void ChromeBrowserFieldTrials::SpdyFieldTrial() { - // Setup SPDY CWND Field trial. - const base::FieldTrial::Probability kSpdyCwndDivisor = 100; - const base::FieldTrial::Probability kSpdyCwnd16 = 20; // fixed at 16 - const base::FieldTrial::Probability kSpdyCwnd10 = 20; // fixed at 10 - const base::FieldTrial::Probability kSpdyCwndMin16 = 20; // no less than 16 - const base::FieldTrial::Probability kSpdyCwndMin10 = 20; // no less than 10 - - // After June 30, 2013 builds, it will always be in default group - // (cwndDynamic). - scoped_refptr<base::FieldTrial> trial( - base::FieldTrialList::FactoryGetFieldTrial( - "SpdyCwnd", kSpdyCwndDivisor, "cwndDynamic", 2013, 6, 30, NULL)); - - trial->AppendGroup("cwnd10", kSpdyCwnd10); - trial->AppendGroup("cwnd16", kSpdyCwnd16); - trial->AppendGroup("cwndMin16", kSpdyCwndMin16); - trial->AppendGroup("cwndMin10", kSpdyCwndMin10); -} - -void ChromeBrowserFieldTrials::AutoLaunchChromeFieldTrial() { - std::string brand; - google_util::GetBrand(&brand); - - // Create a 100% field trial based on the brand code. - if (auto_launch_trial::IsInExperimentGroup(brand)) { - base::FieldTrialList::CreateFieldTrial(kAutoLaunchTrialName, - kAutoLaunchTrialAutoLaunchGroup); - } else if (auto_launch_trial::IsInControlGroup(brand)) { - base::FieldTrialList::CreateFieldTrial(kAutoLaunchTrialName, - kAutoLaunchTrialControlGroup); - } -} - -void ChromeBrowserFieldTrials::SetUpInfiniteCacheFieldTrial() { - const base::FieldTrial::Probability kDivisor = 100; - - base::FieldTrial::Probability infinite_cache_probability = 0; - - scoped_refptr<base::FieldTrial> trial( - base::FieldTrialList::FactoryGetFieldTrial("InfiniteCache", kDivisor, - "No", 2013, 12, 31, NULL)); - trial->UseOneTimeRandomization(); - trial->AppendGroup("Yes", infinite_cache_probability); - trial->AppendGroup("Control", infinite_cache_probability); -} - -void ChromeBrowserFieldTrials::DisableShowProfileSwitcherTrialIfNecessary() { - // This trial is created by the VariationsService, but it needs to be disabled - // if multi-profiles isn't enabled or if browser frame avatar menu is - // always hidden (Chrome OS). - bool avatar_menu_always_hidden = false; -#if defined(OS_CHROMEOS) - avatar_menu_always_hidden = true; + chrome::SetupMobileFieldTrials( + parsed_command_line_, install_time, local_state); +#else + chrome::SetupDesktopFieldTrials( + parsed_command_line_, install_time, local_state); #endif - base::FieldTrial* trial = base::FieldTrialList::Find("ShowProfileSwitcher"); - if (trial && (!ProfileManager::IsMultipleProfilesEnabled() || - avatar_menu_always_hidden)) { - trial->Disable(); - } } // Sets up the experiment. The actual cache backend choice is made in the net/ @@ -233,63 +82,6 @@ void ChromeBrowserFieldTrials::SetUpSimpleCacheFieldTrial() { } } -void ChromeBrowserFieldTrials::SetUpCacheSensitivityAnalysisFieldTrial() { - const base::FieldTrial::Probability kDivisor = 100; - - base::FieldTrial::Probability sensitivity_analysis_probability = 0; - -#if defined(OS_ANDROID) - switch (chrome::VersionInfo::GetChannel()) { - case chrome::VersionInfo::CHANNEL_DEV: - sensitivity_analysis_probability = 10; - break; - case chrome::VersionInfo::CHANNEL_BETA: - sensitivity_analysis_probability = 5; - break; - case chrome::VersionInfo::CHANNEL_STABLE: - sensitivity_analysis_probability = 1; - break; - default: - break; - } -#endif - - scoped_refptr<base::FieldTrial> trial( - base::FieldTrialList::FactoryGetFieldTrial("CacheSensitivityAnalysis", - kDivisor, "No", - 2013, 06, 15, NULL)); - trial->AppendGroup("ControlA", sensitivity_analysis_probability); - trial->AppendGroup("ControlB", sensitivity_analysis_probability); - trial->AppendGroup("100A", sensitivity_analysis_probability); - trial->AppendGroup("100B", sensitivity_analysis_probability); - trial->AppendGroup("200A", sensitivity_analysis_probability); - trial->AppendGroup("200B", sensitivity_analysis_probability); - // TODO(gavinp,rvargas): Re-add 400 group to field trial if results justify. -} - -void ChromeBrowserFieldTrials::WindowsOverlappedTCPReadsFieldTrial() { -#if defined(OS_WIN) - if (parsed_command_line_.HasSwitch(switches::kOverlappedRead)) { - std::string option = - parsed_command_line_.GetSwitchValueASCII(switches::kOverlappedRead); - if (LowerCaseEqualsASCII(option, "off")) - net::TCPClientSocketWin::DisableOverlappedReads(); - } else { - const base::FieldTrial::Probability kDivisor = 2; // 1 in 2 chance - const base::FieldTrial::Probability kOverlappedReadProbability = 1; - scoped_refptr<base::FieldTrial> overlapped_reads_trial( - base::FieldTrialList::FactoryGetFieldTrial("OverlappedReadImpact", - kDivisor, "OverlappedReadEnabled", 2013, 6, 1, NULL)); - int overlapped_reads_disabled_group = - overlapped_reads_trial->AppendGroup("OverlappedReadDisabled", - kOverlappedReadProbability); - int assigned_group = overlapped_reads_trial->group(); - if (assigned_group == overlapped_reads_disabled_group) - net::TCPClientSocketWin::DisableOverlappedReads(); - } -#endif -} - void ChromeBrowserFieldTrials::InstantiateDynamicTrials() { // Call |FindValue()| on the trials below, which may come from the server, to // ensure they get marked as "used" for the purposes of data reporting. |