Revert r113405, since it appears to be causing a crash and a hang.

net/spdy/spdy_session.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_SPDY_SPDY_SESSION_H_
 #define NET_SPDY_SPDY_SESSION_H_
 #pragma once
 
 #include <deque>
 #include <list>
 #include <map>
@@ skipping 27 matching lines @@
 // ACKs quickly from TCP (because TCP tries to only ACK every other packet).
 const int kMss = 1430;
 const int kMaxSpdyFrameChunkSize = (2 * kMss) - spdy::SpdyFrame::kHeaderSize;
 
 class BoundNetLog;
 class SpdySettingsStorage;
 class SpdyStream;
 class SSLInfo;
 
 class NET_EXPORT SpdySession : public base::RefCounted<SpdySession>,
-                               public spdy::BufferedSpdyFramerVisitorInterface,
-                               public LayeredPool {
+                               public spdy::BufferedSpdyFramerVisitorInterface {
  public:
   // Create a new SpdySession.
   // |host_port_proxy_pair| is the host/port that this session connects to, and
   // the proxy configuration settings that it's using.
   // |spdy_session_pool| is the SpdySessionPool that owns us.  Its lifetime must
   // strictly be greater than |this|.
   // |session| is the HttpNetworkSession.  |net_log| is the NetLog that we log
   // network events to.
   SpdySession(const HostPortProxyPair& host_port_proxy_pair,
               SpdySessionPool* spdy_session_pool,
@@ skipping 169 matching lines @@
   // Returns true if flow control is enabled for the session.
   bool is_flow_control_enabled() const {
     return flow_control_;
   }
 
   const BoundNetLog& net_log() const { return net_log_; }
 
   int GetPeerAddress(AddressList* address) const;
   int GetLocalAddress(IPEndPoint* address) const;
 
-  // LayeredPool implementation.
-  virtual bool CloseOneIdleConnection() OVERRIDE;
-
  private:
   friend class base::RefCounted<SpdySession>;
 
   // Allow tests to access our innards for testing purposes.
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, Ping);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, FailedPing);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, GetActivePushStream);
 
   struct PendingCreateStream {
     PendingCreateStream(const GURL& url, RequestPriority priority,
@@ skipping 385 matching lines @@
   const spdy::SpdyControlFlags flags_;
   const spdy::SpdyStreamId id_;
   const spdy::SpdyStreamId associated_stream_;
 
   DISALLOW_COPY_AND_ASSIGN(NetLogSpdySynParameter);
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_SESSION_H_