Fix Net.Socket.IdleSocketTimeSaving histogram

net/socket/client_socket_pool_base.h

Index: net/socket/client_socket_pool_base.h
diff --git a/net/socket/client_socket_pool_base.h b/net/socket/client_socket_pool_base.h
index 192602186f285b90791dab45319ad90950dfde70..f539ad43b968fdac8b1fd82a36891d569c81d119 100644
--- a/net/socket/client_socket_pool_base.h
+++ b/net/socket/client_socket_pool_base.h
@@ -277,7 +277,8 @@ class NET_EXPORT_PRIVATE ClientSocketPoolBaseHelper
   // See ClientSocketPool::ReleaseSocket for documentation on this function.
   void ReleaseSocket(const std::string& group_name,
                      std::unique_ptr<StreamSocket> socket,
-                     int id);
+                     int id,
+                     const LoadTimingInfo::ConnectTiming& connect_timing);
 
   // See ClientSocketPool::FlushWithError for documentation on this function.
   void FlushWithError(int error);
@@ -370,6 +371,8 @@ class NET_EXPORT_PRIVATE ClientSocketPoolBaseHelper
 
     StreamSocket* socket;
     base::TimeTicks start_time;
+    // ConnectTiming of the connection establishment.
+    LoadTimingInfo::ConnectTiming connect_timing;
   };
 
   typedef PriorityQueue<const Request*> RequestQueue;
@@ -552,7 +555,10 @@ class NET_EXPORT_PRIVATE ClientSocketPoolBaseHelper
                      const NetLogWithSource& net_log);
 
   // Adds |socket| to the list of idle sockets for |group|.
-  void AddIdleSocket(std::unique_ptr<StreamSocket> socket, Group* group);
+  // |connect_timing| is the connect timing of the connection establishment;
+  void AddIdleSocket(std::unique_ptr<StreamSocket> socket,
+                     Group* group,
+                     const LoadTimingInfo::ConnectTiming& connect_timing);
 
   // Iterates through |group_map_|, canceling all ConnectJobs and deleting
   // groups if they are no longer needed.
@@ -772,8 +778,10 @@ class ClientSocketPoolBase {
 
   void ReleaseSocket(const std::string& group_name,
                      std::unique_ptr<StreamSocket> socket,
-                     int id) {
-    return helper_.ReleaseSocket(group_name, std::move(socket), id);
+                     int id,
+                     const LoadTimingInfo::ConnectTiming& connect_timing) {
+    return helper_.ReleaseSocket(group_name, std::move(socket), id,
+                                 connect_timing);
   }
 
   void FlushWithError(int error) { helper_.FlushWithError(error); }