relnote: add new unused functions for client side of QUIC server push.

net/quic/spdy_utils.h

Index: net/quic/spdy_utils.h
diff --git a/net/quic/spdy_utils.h b/net/quic/spdy_utils.h
index b0d8a597d7661cdfa73862005e9ea349d86c97f5..2351e57506f2a690d0581ab19dbb4f05283c62b6 100644
--- a/net/quic/spdy_utils.h
+++ b/net/quic/spdy_utils.h
@@ -43,6 +43,14 @@ class NET_EXPORT_PRIVATE SpdyUtils {
                             size_t* final_byte_offset,
                             SpdyHeaderBlock* trailers);
 
+  // Returns URL composed from scheme, authority, and path header
+  // values, or empty string if any of those fields are missing.
+  static std::string GetUrlFromHeaderBlock(const net::SpdyHeaderBlock& headers);
+
+  // Returns true if result of |GetUrlFromHeaderBlock()| is non-empty
+  // and is a well-formed URL.
+  static bool UrlIsValid(const net::SpdyHeaderBlock& headers);
+
  private:
   DISALLOW_COPY_AND_ASSIGN(SpdyUtils);
 };