Flush socket pools and SPDY session pool properly on explicit requests and network changes.

net/spdy/spdy_session_unittest.cc

Index: net/spdy/spdy_session_unittest.cc
diff --git a/net/spdy/spdy_session_unittest.cc b/net/spdy/spdy_session_unittest.cc
index 49e44911fa491974d25f555479866c522f025c50..ece870cf650ac954af8b241a11ba6b31a04d4bcd 100644
--- a/net/spdy/spdy_session_unittest.cc
+++ b/net/spdy/spdy_session_unittest.cc
@@ -28,15 +28,13 @@ class SessionDependencies {
   SessionDependencies()
       : host_resolver(new MockHostResolver),
         proxy_service(ProxyService::CreateNull()),
-        ssl_config_service(new SSLConfigServiceDefaults),
-        spdy_session_pool(new SpdySessionPool) {
+        ssl_config_service(new SSLConfigServiceDefaults) {
   }
 
   scoped_refptr<MockHostResolverBase> host_resolver;
   scoped_refptr<ProxyService> proxy_service;
   scoped_refptr<SSLConfigService> ssl_config_service;
   MockClientSocketFactory socket_factory;
-  scoped_refptr<SpdySessionPool> spdy_session_pool;
 };
 
 HttpNetworkSession* CreateSession(SessionDependencies* session_deps) {
@@ -45,7 +43,6 @@ HttpNetworkSession* CreateSession(SessionDependencies* session_deps) {
                                 session_deps->proxy_service,
                                 &session_deps->socket_factory,
                                 session_deps->ssl_config_service,
-                                session_deps->spdy_session_pool,
                                 NULL);
 }