use chrome beta in integration tests for testing v35

integrationtests/chrome_test.go

@@ -162,6 +162,9 @@ var _ = Describe("Chrome tests", func() {
 			})
 
 			It("uploads a large file", func() {
+				if version < protocol.Version34 {
+					Skip("skipping on <v34, see #301")
+				}
 				dataMan.GenerateData(dataLongLen)
 				data := dataMan.GetData()
 				dir, err := ioutil.TempDir("", "quic-upload-src")