Move logic to figure out if a socket can be reused into HttpStream.

net/http/proxy_connect_redirect_http_stream.cc

Index: net/http/proxy_connect_redirect_http_stream.cc
diff --git a/net/http/proxy_connect_redirect_http_stream.cc b/net/http/proxy_connect_redirect_http_stream.cc
index 4e12a327229005e284cb18ee21678b2457198886..3b166073a36c25af4aa2dc674f8c55f1fd6d2fd4 100644
--- a/net/http/proxy_connect_redirect_http_stream.cc
+++ b/net/http/proxy_connect_redirect_http_stream.cc
@@ -58,10 +58,6 @@ bool ProxyConnectRedirectHttpStream::IsResponseBodyComplete() const {
   return true;
 }
 
-bool ProxyConnectRedirectHttpStream::CanFindEndOfResponse() const {
-  return true;
-}
-
 bool ProxyConnectRedirectHttpStream::IsConnectionReused() const {
   NOTREACHED();
   return false;
@@ -71,8 +67,7 @@ void ProxyConnectRedirectHttpStream::SetConnectionReused() {
   NOTREACHED();
 }
 
-bool ProxyConnectRedirectHttpStream::IsConnectionReusable() const {
-  NOTREACHED();
+bool ProxyConnectRedirectHttpStream::CanReuseConnection() const {
   return false;
 }
 
@@ -98,11 +93,6 @@ void ProxyConnectRedirectHttpStream::GetSSLCertRequestInfo(
   NOTREACHED();
 }
 
-bool ProxyConnectRedirectHttpStream::IsSpdyHttpStream() const {
-  NOTREACHED();
-  return false;
-}
-
 void ProxyConnectRedirectHttpStream::Drain(HttpNetworkSession* session) {
   NOTREACHED();
 }