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

net/spdy/spdy_http_stream.h

Index: net/spdy/spdy_http_stream.h
diff --git a/net/spdy/spdy_http_stream.h b/net/spdy/spdy_http_stream.h
index 0aa54f056863bb607c6ff5c87b8a26b3a9be2bd8..b5ed8134e8da199aa2b2bd755591adff59b33d17 100644
--- a/net/spdy/spdy_http_stream.h
+++ b/net/spdy/spdy_http_stream.h
@@ -57,19 +57,17 @@ class NET_EXPORT_PRIVATE SpdyHttpStream : public SpdyStream::Delegate,
   void Close(bool not_reusable) override;
   HttpStream* RenewStreamForAuth() override;
   bool IsResponseBodyComplete() const override;
-  bool CanFindEndOfResponse() const override;
 
   // Must not be called if a NULL SpdySession was pssed into the
   // constructor.
   bool IsConnectionReused() const override;
 
   void SetConnectionReused() override;
-  bool IsConnectionReusable() const override;
+  bool CanReuseConnection() const override;
   int64 GetTotalReceivedBytes() const override;
   bool GetLoadTimingInfo(LoadTimingInfo* load_timing_info) const override;
   void GetSSLInfo(SSLInfo* ssl_info) override;
   void GetSSLCertRequestInfo(SSLCertRequestInfo* cert_request_info) override;
-  bool IsSpdyHttpStream() const override;
   void Drain(HttpNetworkSession* session) override;
   void SetPriority(RequestPriority priority) override;