Change a number of SPDY unittests from http to https.

net/http/http_network_session.h

Index: net/http/http_network_session.h
diff --git a/net/http/http_network_session.h b/net/http/http_network_session.h
index 2c81a9afa8ab957bb1dc3800682a68849d1042e1..fd3b0961dcea9b98ca9a36941849587362ba6d7d 100644
--- a/net/http/http_network_session.h
+++ b/net/http/http_network_session.h
@@ -100,10 +100,6 @@ class NET_EXPORT HttpNetworkSession
     // Whether to enable QUIC Alt-Svc entries with hostname different than that
     // of the origin.
     bool enable_quic_alternative_service_with_different_host;
-    // Only set for tests.
-    // TODO(bnc) https://crbug.com/615497:
-    // Adapt tests to https requests, remove this member.
-    bool enable_alternative_service_for_insecure_origins;
 
     // Enables NPN support.  Note that ALPN is always enabled.
     bool enable_npn;