Disallow multiple HEADERS frames on pushed streams.

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 bcd2fbccfb06564a2d2686e3bdbf94ff919d52a6..f133090f37a9475525f178c2cb9de579d9f64435 100644
--- a/net/spdy/spdy_http_stream.h
+++ b/net/spdy/spdy_http_stream.h
@@ -87,9 +87,8 @@ class NET_EXPORT_PRIVATE SpdyHttpStream : public SpdyStream::Delegate,
   void SetPriority(RequestPriority priority) override;
 
   // SpdyStream::Delegate implementation.
-  void OnRequestHeadersSent() override;
-  SpdyResponseHeadersStatus OnResponseHeadersUpdated(
-      const SpdyHeaderBlock& response_headers) override;
+  void OnHeadersSent() override;
+  void OnHeadersReceived(const SpdyHeaderBlock& response_headers) override;
   void OnDataReceived(std::unique_ptr<SpdyBuffer> buffer) override;
   void OnDataSent() override;
   void OnTrailers(const SpdyHeaderBlock& trailers) override;
@@ -168,9 +167,7 @@ class NET_EXPORT_PRIVATE SpdyHttpStream : public SpdyStream::Delegate,
 
   std::unique_ptr<HttpResponseInfo> push_response_info_;
 
-  // We don't use SpdyStream's |response_header_status_| as we
-  // sometimes call back into our delegate before it is updated.
-  SpdyResponseHeadersStatus response_headers_status_;
+  bool response_headers_complete_;
 
   // We buffer the response body as it arrives asynchronously from the stream.
   SpdyReadQueue response_body_queue_;