Close idle connections / SPDY sessions when needed.

net/socket/client_socket_handle.h

Index: net/socket/client_socket_handle.h
diff --git a/net/socket/client_socket_handle.h b/net/socket/client_socket_handle.h
index cab6ef65fef3b19281be0f83c13bec0af802d718..23fc5cf07199029d81816724c746ffbf22a5e574 100644
--- a/net/socket/client_socket_handle.h
+++ b/net/socket/client_socket_handle.h
@@ -92,6 +92,10 @@ class NET_EXPORT ClientSocketHandle {
   // initialized the ClientSocketHandle.
   LoadState GetLoadState() const;
 
+  bool IsPoolStalled() const;
+
+  void AddLayeredPool(LayeredPool* layered_pool);
+
   // Returns true when Init() has completed successfully.
   bool is_initialized() const { return is_initialized_; }
 
@@ -164,6 +168,7 @@ class NET_EXPORT ClientSocketHandle {
 
   bool is_initialized_;
   ClientSocketPool* pool_;
+  LayeredPool* layered_pool_;
   scoped_ptr<StreamSocket> socket_;
   std::string group_name_;
   bool is_reused_;