Revert 129277 - Revert 127893 - Attempting to re-land the feature.

net/socket/ssl_client_socket_pool.h

Index: net/socket/ssl_client_socket_pool.h
===================================================================
--- net/socket/ssl_client_socket_pool.h	(revision 129292)
+++ net/socket/ssl_client_socket_pool.h	(working copy)
@@ -166,6 +166,7 @@
 
 class NET_EXPORT_PRIVATE SSLClientSocketPool
     : public ClientSocketPool,
+      public LayeredPool,
       public SSLConfigService::Observer {
  public:
   // Only the pools that will be used are required. i.e. if you never
@@ -211,6 +212,8 @@
 
   virtual void Flush() OVERRIDE;
 
+  virtual bool IsStalled() const OVERRIDE;
+
   virtual void CloseIdleSockets() OVERRIDE;
 
   virtual int IdleSocketCount() const OVERRIDE;
@@ -222,6 +225,10 @@
       const std::string& group_name,
       const ClientSocketHandle* handle) const OVERRIDE;
 
+  virtual void AddLayeredPool(LayeredPool* layered_pool) OVERRIDE;
+
+  virtual void RemoveLayeredPool(LayeredPool* layered_pool) OVERRIDE;
+
   virtual base::DictionaryValue* GetInfoAsValue(
       const std::string& name,
       const std::string& type,
@@ -231,6 +238,9 @@
 
   virtual ClientSocketPoolHistograms* histograms() const OVERRIDE;
 
+  // LayeredPool implementation.
+  virtual bool CloseOneIdleConnection() OVERRIDE;
+
  private:
   typedef ClientSocketPoolBase<SSLSocketParams> PoolBase;