Add taskid for navigation, created in session sync

components/sync_sessions/sessions_sync_manager.h

Index: components/sync_sessions/sessions_sync_manager.h
diff --git a/components/sync_sessions/sessions_sync_manager.h b/components/sync_sessions/sessions_sync_manager.h
index d685c65cd42b58f7cb22d4b2b3b6810761165eec..89e72949b8cdd67729bbf81804fc34dd179e2d0a 100644
--- a/components/sync_sessions/sessions_sync_manager.h
+++ b/components/sync_sessions/sessions_sync_manager.h
@@ -17,6 +17,7 @@
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
+#include "base/time/clock.h"
 #include "base/time/time.h"
 #include "components/sessions/core/session_id.h"
 #include "components/sessions/core/session_types.h"
@@ -30,6 +31,7 @@
 #include "components/sync_sessions/revisit/page_revisit_broadcaster.h"
 #include "components/sync_sessions/synced_session.h"
 #include "components/sync_sessions/synced_session_tracker.h"
+#include "components/sync_sessions/task_tracker.h"
 
 namespace syncer {
 class LocalDeviceInfoProvider;
@@ -64,7 +66,9 @@ class SessionsSyncManager : public syncer::SyncableService,
                       syncer::LocalDeviceInfoProvider* local_device,
                       std::unique_ptr<LocalSessionEventRouter> router,
                       const base::Closure& sessions_updated_callback,
-                      const base::Closure& datatype_refresh_callback);
+                      const base::Closure& datatype_refresh_callback,
+                      std::unique_ptr<base::Clock> clock =
+                          base::MakeUnique<base::DefaultClock>());
   ~SessionsSyncManager() override;
 
   // syncer::SyncableService implementation.
@@ -228,7 +232,8 @@ class SessionsSyncManager : public syncer::SyncableService,
   // Set |session_tab| from |tab_delegate| and |mtime|.
   void SetSessionTabFromDelegate(const SyncedTabDelegate& tab_delegate,
                                  base::Time mtime,
-                                 sessions::SessionTab* session_tab);
+                                 sessions::SessionTab* session_tab,
+                                 TabTasks* tab_tasks);
 
   // Sets |variation_ids| field of |session_tab| with the ids of the currently
   // assigned variations which should be sent to sync.
@@ -323,6 +328,8 @@ class SessionsSyncManager : public syncer::SyncableService,
   // Callback to inform sync that a sync data refresh is requested.
   base::Closure datatype_refresh_callback_;
 
+  std::unique_ptr<TaskTracker> task_tracker_;

[Nicolas Zea, 2017/03/27 20:43:52]

nit: comment what this is for

[shenchao, 2017/04/06 00:54:55]

Done.

+
   DISALLOW_COPY_AND_ASSIGN(SessionsSyncManager);
 };