Add UMA Precache.Freshness.Prefetch

components/precache/core/precache_database.h

Index: components/precache/core/precache_database.h
diff --git a/components/precache/core/precache_database.h b/components/precache/core/precache_database.h
index aaea1ca9bbc005fec56820e787c0038a8b80df3e..89e416ac62be71287166e509b7f4835baebef086 100644
--- a/components/precache/core/precache_database.h
+++ b/components/precache/core/precache_database.h
@@ -21,6 +21,7 @@
 #include "components/precache/core/precache_fetcher.h"
 #include "components/precache/core/precache_session_table.h"
 #include "components/precache/core/precache_url_table.h"
+#include "net/http/http_response_info.h"
 
 class GURL;
 
@@ -63,8 +64,8 @@ class PrecacheDatabase {
   void RecordURLPrefetch(const GURL& url,
                          const base::TimeDelta& latency,
                          const base::Time& fetch_time,
-                         int64_t size,
-                         bool was_cached);
+                         const net::HttpResponseInfo& info,
+                         int64_t size);
 
   // Report precache-related metrics in response to a URL being fetched, where
   // the fetch was not motivated by precaching. |is_connection_cellular|
@@ -72,8 +73,8 @@ class PrecacheDatabase {
   void RecordURLNonPrefetch(const GURL& url,
                             const base::TimeDelta& latency,
                             const base::Time& fetch_time,
+                            const net::HttpResponseInfo& info,
                             int64_t size,
-                            bool was_cached,
                             int host_rank,
                             bool is_connection_cellular);