Report Precache.TimeSinceLastPrecache

components/precache/core/precache_session_table.h

Index: components/precache/core/precache_session_table.h
diff --git a/components/precache/core/precache_session_table.h b/components/precache/core/precache_session_table.h
index e4be3238107b612c86c52de6a835066c706b21cf..ce742b1bec3c977387967bc29f2050bff3af929e 100644
--- a/components/precache/core/precache_session_table.h
+++ b/components/precache/core/precache_session_table.h
@@ -29,6 +29,8 @@ class PrecacheUnfinishedWork;
 enum SessionDataType {
   // Unfinished work to do sometime later.
   UNFINISHED_WORK = 0,
+  // Timestamp of the last precache.
+  LAST_PRECACHE_TIMESTAMP = 1,
 };
 
 class PrecacheSessionTable {
@@ -41,6 +43,18 @@ class PrecacheSessionTable {
   // Init must be called before any other methods.
   bool Init(sql::Connection* db);
 
+  // -- Time since last precache --
+
+  void SetLastPrecacheTimestamp(const base::Time& time);
+
+  // If none present, it will return base::Time(), so it can be checked via
+  // is_null().
+  base::Time GetLastPrecacheTimestamp();
+
+  void DeleteLastPrecacheTimestamp();
+
+  // -- Unfinished work --
+
   // Stores unfinished work.
   void SaveUnfinishedWork(
       std::unique_ptr<PrecacheUnfinishedWork> unfinished_work);