Add an IsBootstrapped method to the SiteEngagementService.

chrome/browser/engagement/site_engagement_service.cc

Index: chrome/browser/engagement/site_engagement_service.cc
diff --git a/chrome/browser/engagement/site_engagement_service.cc b/chrome/browser/engagement/site_engagement_service.cc
index ba0e74dd54de955f2aa1a583b897e198d336ad7b..7ac64f109c3f128aeb745a24653acae811a9cdbe 100644
--- a/chrome/browser/engagement/site_engagement_service.cc
+++ b/chrome/browser/engagement/site_engagement_service.cc
@@ -126,6 +126,7 @@ double SiteEngagementScore::param_values[] = {
     0.01,  // HIDDEN_MEDIA_POINTS
     5,     // WEB_APP_INSTALLED_POINTS
     0.5,   // FIRST_DAILY_ENGAGEMENT
+    30,    // BOOTSTRAP_POINTS

[dominickn, 2016/02/04 03:11:24]

Nit: as discussed offline wrt UMA stats, change this to 8.

[calamity, 2016/02/04 23:09:09]

Done.

 };
 
 const char* SiteEngagementScore::kRawScoreKey = "rawScore";
@@ -170,6 +171,10 @@ double SiteEngagementScore::GetFirstDailyEngagementPoints() {
   return param_values[FIRST_DAILY_ENGAGEMENT];
 }
 
+double SiteEngagementScore::GetBootstrapPoints() {
+  return param_values[BOOTSTRAP_POINTS];
+}
+
 void SiteEngagementScore::UpdateFromVariations() {
   double param_vals[MAX_VARIATION];
 
@@ -334,6 +339,7 @@ void SiteEngagementScore::SetParamValuesForTesting() {
   param_values[VISIBLE_MEDIA_POINTS] = 0.02;
   param_values[HIDDEN_MEDIA_POINTS] = 0.01;
   param_values[WEB_APP_INSTALLED_POINTS] = 5;
+  param_values[BOOTSTRAP_POINTS] = 30;
 
   // This is set to zero to avoid interference with tests and is set when
   // testing this functionality.
@@ -519,6 +525,11 @@ std::map<GURL, double> SiteEngagementService::GetScoreMap() {
   return score_map;
 }
 
+bool SiteEngagementService::IsBootstrapped() {
+  return GetTotalEngagementPoints() >=
+         SiteEngagementScore::GetBootstrapPoints();
+}
+
 SiteEngagementService::SiteEngagementService(Profile* profile,
                                              scoped_ptr<base::Clock> clock)
     : profile_(profile), clock_(std::move(clock)), weak_factory_(this) {