Add taskid for navigation, created in session sync

components/sessions/core/serialized_navigation_entry.h

Index: components/sessions/core/serialized_navigation_entry.h
diff --git a/components/sessions/core/serialized_navigation_entry.h b/components/sessions/core/serialized_navigation_entry.h
index 3a8e665ff02e256d5e8ab330a1ccef226e3c4813..3e79ae5bab77aecf7966bae5b819d27344e8233e 100644
--- a/components/sessions/core/serialized_navigation_entry.h
+++ b/components/sessions/core/serialized_navigation_entry.h
@@ -128,6 +128,9 @@ class SESSIONS_EXPORT SerializedNavigationEntry {
     return extended_info_map_;
   }
 
+  const std::vector<int64_t>& get_task_id() const { return task_id_; }
+  void set_task_id(const std::vector<int64_t>& task_id) { task_id_ = task_id; }
+
   size_t EstimateMemoryUsage() const;
 
  private:
@@ -160,6 +163,7 @@ class SESSIONS_EXPORT SerializedNavigationEntry {
   int http_status_code_;
   bool is_restored_;    // Not persisted.
   std::vector<GURL> redirect_chain_;  // Not persisted.
+  std::vector<int64_t> task_id_;

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

This class is exclusively meant to wrap data stored within a NavigationEntry. As
such, I don't think this is the right place for this task id to live.

What we probably need to do is stop using the SerializedNavigationEntry directly
in the SessionsSyncManager, and instead have our own wrapper around it (e.g.
SyncSessionTab).

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

Acknowledged. Stopped using the SerializedNavigationEntry, but maybe leaving
having a new wrapper as future work.

 
   // Additional information.
   BlockedState blocked_state_;