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

net/url_request/url_request_http_job_unittest.cc

Index: net/url_request/url_request_http_job_unittest.cc
diff --git a/net/url_request/url_request_http_job_unittest.cc b/net/url_request/url_request_http_job_unittest.cc
index d857c962fcda3c7175b07c9f9cc61a1778fc7d17..5022d61c8c4554fa81058ffff8bb25426bd2e0d3 100644
--- a/net/url_request/url_request_http_job_unittest.cc
+++ b/net/url_request/url_request_http_job_unittest.cc
@@ -603,12 +603,10 @@ class FakeWebSocketHandshakeStream : public WebSocketHandshakeStreamBase {
 
   bool IsResponseBodyComplete() const override { return false; }
 
-  bool CanFindEndOfResponse() const override { return false; }
-
   bool IsConnectionReused() const override { return false; }
   void SetConnectionReused() override {}
 
-  bool IsConnectionReusable() const override { return false; }
+  bool CanReuseConnection() const override { return false; }
 
   int64 GetTotalReceivedBytes() const override { return 0; }
 
@@ -620,8 +618,6 @@ class FakeWebSocketHandshakeStream : public WebSocketHandshakeStreamBase {
 
   void GetSSLCertRequestInfo(SSLCertRequestInfo* cert_request_info) override {}
 
-  bool IsSpdyHttpStream() const override { return false; }
-
   void Drain(HttpNetworkSession* session) override {}
 
   void SetPriority(RequestPriority priority) override {}