Refactor: change the spdy session pool key to take a ProxyServer instead of a stri...

net/spdy/spdy_session_pool.h

Index: net/spdy/spdy_session_pool.h
===================================================================
--- net/spdy/spdy_session_pool.h	(revision 57276)
+++ net/spdy/spdy_session_pool.h	(working copy)
@@ -18,11 +18,12 @@
 #include "net/base/net_errors.h"
 #include "net/base/network_change_notifier.h"
 #include "net/proxy/proxy_config.h"
+#include "net/proxy/proxy_server.h"
 
 namespace net {
-// Sessions are uniquely identified by their HostPortPair and the PAC-style list
-// of valid proxy servers.
-typedef std::pair<HostPortPair, std::string> HostPortProxyPair;
+// Sessions are uniquely identified by their HostPortPair and the proxy server
+// that will be used to connect to it (may be DIRECT).
+typedef std::pair<HostPortPair, ProxyServer> HostPortProxyPair;
 
 class BoundNetLog;
 class ClientSocketHandle;