[Doodle] Record UMA for DoodleConfig download outcome and time

components/doodle/doodle_service.h

Index: components/doodle/doodle_service.h
diff --git a/components/doodle/doodle_service.h b/components/doodle/doodle_service.h
index 3b519f8d06ede7eadd328a4e6fcdd6b6427ab955..db8487052065f853addcfbee5f3601f640073636 100644
--- a/components/doodle/doodle_service.h
+++ b/components/doodle/doodle_service.h
@@ -11,6 +11,7 @@
 #include "base/observer_list.h"
 #include "base/optional.h"
 #include "base/time/clock.h"
+#include "base/time/tick_clock.h"
 #include "base/timer/timer.h"
 #include "components/doodle/doodle_fetcher.h"
 #include "components/doodle/doodle_types.h"
@@ -38,7 +39,8 @@ class DoodleService : public KeyedService {
   DoodleService(PrefService* pref_service,
                 std::unique_ptr<DoodleFetcher> fetcher,
                 std::unique_ptr<base::OneShotTimer> expiry_timer,
-                std::unique_ptr<base::Clock> clock);
+                std::unique_ptr<base::Clock> clock,
+                std::unique_ptr<base::TickClock> tick_clock);
   ~DoodleService() override;
 
   // KeyedService implementation.
@@ -62,11 +64,14 @@ class DoodleService : public KeyedService {
 
  private:
   // Callback for the fetcher.
-  void DoodleFetched(DoodleState state,
+  void DoodleFetched(base::TimeTicks start_time,
+                     DoodleState state,
                      base::TimeDelta time_to_live,
                      const base::Optional<DoodleConfig>& doodle_config);
 
-  void UpdateCachedConfig(base::TimeDelta time_to_live,
+  void UpdateCachedConfig(base::Optional<base::TimeDelta> download_time,
+                          DoodleState state,
+                          base::TimeDelta time_to_live,
                           const base::Optional<DoodleConfig>& doodle_config);
 
   // Callback for the expiry timer.
@@ -79,6 +84,7 @@ class DoodleService : public KeyedService {
 
   std::unique_ptr<base::OneShotTimer> expiry_timer_;
   std::unique_ptr<base::Clock> clock_;
+  std::unique_ptr<base::TickClock> tick_clock_;
 
   // The result of the last network fetch.
   base::Optional<DoodleConfig> cached_config_;