Add the LoggedIn Predictor, to detect which websites a user is likely

logged into (or has been logged into).
R=shishir@chromium.org, bauerb@chromium.org

Review URL: https://codereview.chromium.org/13903018

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@194484 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 24 insertions, 0 deletions

diff --git a/chrome/browser/prerender/prerender_field_trial.cc b/chrome/browser/prerender/prerender_field_trial.cc
index 6ff8c6a..312c9fb 100644
--- a/chrome/browser/prerender/prerender_field_trial.cc
+++ b/chrome/browser/prerender/prerender_field_trial.cc
@@ -29,6 +29,10 @@ int g_omnibox_trial_default_group_number = kint32min;
 const char kLocalPredictorTrialName[] = "PrerenderLocalPredictor";
 const char kLocalPredictorEnabledGroup[] = "Enabled";
 
+const char kLoggedInPredictorTrialName[] = "PrerenderLoggedInPredictor";
+const char kLoggedInPredictorEnabledGroup[] = "Enabled";
+const char kLoggedInPredictorDisabledGroup[] = "Disabled";
+
 void SetupPrefetchFieldTrial() {
   chrome::VersionInfo::Channel channel = chrome::VersionInfo::GetChannel();
   if (channel == chrome::VersionInfo::CHANNEL_STABLE ||
@@ -141,6 +145,7 @@ void SetupPrerenderFieldTrial() {
 }  // end namespace
 
 void ConfigureOmniboxPrerender();
+void ConfigureLoggedInPredictor();
 
 void ConfigurePrefetchAndPrerender(const CommandLine& command_line) {
   enum PrerenderOption {
@@ -197,6 +202,7 @@ void ConfigurePrefetchAndPrerender(const CommandLine& command_line) {
   }
 
   ConfigureOmniboxPrerender();
+  ConfigureLoggedInPredictor();
 }
 
 void ConfigureOmniboxPrerender() {
@@ -217,6 +223,19 @@ void ConfigureOmniboxPrerender() {
                                        kDisabledProbability);
 }
 
+void ConfigureLoggedInPredictor() {
+  chrome::VersionInfo::Channel channel = chrome::VersionInfo::GetChannel();
+  if (channel == chrome::VersionInfo::CHANNEL_STABLE ||
+      channel == chrome::VersionInfo::CHANNEL_BETA) {
+    return;
+  }
+  scoped_refptr<FieldTrial> logged_in_predictor_trial(
+      FieldTrialList::FactoryGetFieldTrial(
+          kLoggedInPredictorTrialName, 100,
+          kLoggedInPredictorDisabledGroup, 2013, 12, 31, NULL));
+  logged_in_predictor_trial->AppendGroup(kLoggedInPredictorEnabledGroup, 100);
+}
+
 bool IsOmniboxEnabled(Profile* profile) {
   if (!profile)
     return false;
@@ -250,4 +269,9 @@ bool IsLocalPredictorEnabled() {
       kLocalPredictorEnabledGroup;
 }
 
+bool IsLoggedInPredictorEnabled() {
+  return base::FieldTrialList::FindFullName(kLoggedInPredictorTrialName) ==
+      kLoggedInPredictorEnabledGroup;
+}
+
 }  // namespace prerender