Add experiment to exercise AffiliationService with dummy data, plus add related UMA histograms.

components/password_manager/core/browser/affiliated_match_helper.h

Index: components/password_manager/core/browser/affiliated_match_helper.h
diff --git a/components/password_manager/core/browser/affiliated_match_helper.h b/components/password_manager/core/browser/affiliated_match_helper.h
index 7fe246d041f4162db8cad55fa5770e3a6a119e06..b3ba88608efc43483f88a89b3250b3fcb17d99f2 100644
--- a/components/password_manager/core/browser/affiliated_match_helper.h
+++ b/components/password_manager/core/browser/affiliated_match_helper.h
@@ -13,6 +13,7 @@
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
+#include "base/timer/timer.h"
 #include "components/password_manager/core/browser/affiliation_utils.h"
 #include "components/password_manager/core/browser/password_store.h"
 #include "components/password_manager/core/browser/password_store_consumer.h"
@@ -108,6 +109,10 @@ class AffiliatedMatchHelper : public PasswordStore::Observer,
   static const int64 kInitializationDelayOnStartupInSeconds = 8;
 
  private:
+  // Indicates the time at which verifying that affiliation information has been
+  // correctly prefetched for dummy Android applications takes place.
+  enum class VerificationTiming { ON_STARTUP, PERIODIC };
+
   // Reads all autofillable credentials from the password store and starts
   // observing the store for future changes.
   void DoDeferredInitialization();
@@ -129,6 +134,26 @@ class AffiliatedMatchHelper : public PasswordStore::Observer,
       const AffiliatedFacets& results,
       bool success);
 
+  // Called either shortly after startup or periodically in the steady state (as
+  // indicated by |timing|) to verify that affiliation information has been
+  // correctly prefetched for the dummy Android applications. Will record UMA
+  // histograms using a appropriate suffix based on |timing|.
+  void VerifyAffiliationsForDummyFacets(VerificationTiming timing);
+
+  // Sets up the given |timer| to call VerifyAffiliationsForDummyFacets() with
+  // the specified |delay|, with the given |timing| designation.
+  void ScheduleVerifyAffiliationsForDummyFacets(base::Timer* timer,
+                                                base::TimeDelta delay,
+                                                VerificationTiming timing);
+
+  // Called back by the AffiliationService in response to requesting affiliation
+  // information for the dummy Web facets. The |timing| indicates if the check
+  // was performed shortly after startup or periodically in the steady state.
+  static void OnRetrievedAffiliationResultsForDummyWebFacets(
+      VerificationTiming timing,
+      const AffiliatedFacets& results,
+      bool success);
+
   // PasswordStore::Observer:
   void OnLoginsChanged(const PasswordStoreChangeList& changes) override;
 
@@ -142,6 +167,10 @@ class AffiliatedMatchHelper : public PasswordStore::Observer,
   // Being the sole consumer of AffiliationService, |this| owns the service.
   scoped_ptr<AffiliationService> affiliation_service_;
 
+  // Timers used to schedule VerifyAffiliationsPrefetchedForDummyFacets().
+  base::OneShotTimer<AffiliatedMatchHelper> on_startup_verification_timer_;
+  base::RepeatingTimer<AffiliatedMatchHelper> repeated_verification_timer_;
+
   base::WeakPtrFactory<AffiliatedMatchHelper> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AffiliatedMatchHelper);