Close idle connections / SPDY sessions when needed

net/spdy/spdy_session.h

Index: net/spdy/spdy_session.h
diff --git a/net/spdy/spdy_session.h b/net/spdy/spdy_session.h
index 50447c0b9cce8f1f7697aac091547b9de59a20d5..563f7cfc5fa808203d881806951f501c4130d04e 100644
--- a/net/spdy/spdy_session.h
+++ b/net/spdy/spdy_session.h
@@ -46,7 +46,8 @@ class SpdyStream;
 class SSLInfo;
 
 class NET_EXPORT SpdySession : public base::RefCounted<SpdySession>,
-                               public spdy::BufferedSpdyFramerVisitorInterface {
+                               public spdy::BufferedSpdyFramerVisitorInterface,
+                               public LayeredPool {
  public:
   // Create a new SpdySession.
   // |host_port_proxy_pair| is the host/port that this session connects to, and
@@ -282,6 +283,9 @@ class NET_EXPORT SpdySession : public base::RefCounted<SpdySession>,
 
   int GetProtocolVersion() const;
 
+  // LayeredPool implementation.
+  virtual bool CloseOneIdleConnection() OVERRIDE;
+
  private:
   friend class base::RefCounted<SpdySession>;
 
@@ -289,9 +293,11 @@ class NET_EXPORT SpdySession : public base::RefCounted<SpdySession>,
   FRIEND_TEST_ALL_PREFIXES(SpdySessionSpdy2Test, Ping);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionSpdy2Test, FailedPing);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionSpdy2Test, GetActivePushStream);
+  FRIEND_TEST_ALL_PREFIXES(SpdySessionSpdy2Test, CloseOneIdleConnection);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionSpdy3Test, Ping);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionSpdy3Test, FailedPing);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionSpdy3Test, GetActivePushStream);
+  FRIEND_TEST_ALL_PREFIXES(SpdySessionSpdy3Test, CloseOneIdleConnection);
 
   struct PendingCreateStream {
     PendingCreateStream(const GURL& url, RequestPriority priority,