[Smart Lock] Measure clicks on the lock icon during Easy Unlock's trial run.

chrome/browser/signin/easy_unlock_metrics.h

Index: chrome/browser/signin/easy_unlock_metrics.h
diff --git a/chrome/browser/signin/easy_unlock_metrics.h b/chrome/browser/signin/easy_unlock_metrics.h
index 019a7ffe908ce607975d8fc097942edacfbca906..44c2647350bac4a1c9b580dfcc56b72a23e48e8d 100644
--- a/chrome/browser/signin/easy_unlock_metrics.h
+++ b/chrome/browser/signin/easy_unlock_metrics.h
@@ -61,7 +61,16 @@ enum EasyUnlockAuthEvent {
   EASY_UNLOCK_AUTH_EVENT_COUNT  // Must be the last entry.
 };
 
+enum EasyUnlockTrialRunEvent {
+  // A trial run was initiated from the Easy Unlock setup app.
+  EASY_UNLOCK_TRIAL_RUN_EVENT_LAUNCHED = 0,
+  // The user clicked on the lock icon during the trial run.
+  EASY_UNLOCK_TRIAL_RUN_EVENT_CLICKED_LOCK_ICON = 1,
+  EASY_UNLOCK_TRIAL_RUN_EVENT_COUNT  // Must be the last entry.
+};
+
 void RecordEasyUnlockSigninEvent(EasyUnlockAuthEvent event);
 void RecordEasyUnlockScreenUnlockEvent(EasyUnlockAuthEvent event);
+void RecordEasyUnlockTrialRunEvent(EasyUnlockTrialRunEvent event);
 
 #endif  // CHROME_BROWSER_SIGNIN_EASY_UNLOCK_METRICS_H_