[Session restore] Add MRU logic to loading of background pages.

chrome/browser/sessions/session_service.cc

Index: chrome/browser/sessions/session_service.cc
diff --git a/chrome/browser/sessions/session_service.cc b/chrome/browser/sessions/session_service.cc
index 99de7204e61bdf7d52e078b0e979d175b29f58eb..4bf7f25cdd01b6a5b4379383e937a86fed6896a4 100644
--- a/chrome/browser/sessions/session_service.cc
+++ b/chrome/browser/sessions/session_service.cc
@@ -487,6 +487,16 @@ void SessionService::SetTabExtensionAppID(
                       tab_id, extension_app_id).Pass());
 }
 
+void SessionService::SetLastActiveTime(const SessionID& window_id,
+                                       const SessionID& tab_id,
+                                       base::Time last_active_time) {
+  if (!ShouldTrackChangesToWindow(window_id))
+    return;
+
+  ScheduleCommand(
+      sessions::CreateLastActiveTimeCommand(tab_id, last_active_time).Pass());
+}
+
 base::CancelableTaskTracker::TaskId SessionService::GetLastSession(
     const SessionCallback& callback,
     base::CancelableTaskTracker* tracker) {
@@ -727,6 +737,10 @@ void SessionService::BuildCommandsForTab(const SessionID& window_id,
         sessions::CreatePinnedStateCommand(session_id, true));
   }
 
+  base_session_service_->AppendRebuildCommand(

[sky, 2015/05/18 15:53:28]

Only if SessionRestore::SMART_RESTORE_MODE_MRU?

[Georges Khalil, 2015/05/19 19:32:15]

Done.

+      sessions::CreateLastActiveTimeCommand(session_id,
+                                            tab->GetLastActiveTime()));
+
   extensions::TabHelper* extensions_tab_helper =
       extensions::TabHelper::FromWebContents(tab);
   if (extensions_tab_helper->extension_app()) {