Add dvlog_always_on to enable DVLOG without DEBUG and DCHECK option

net/spdy/core/hpack/hpack_huffman_decoder.cc

Index: net/spdy/core/hpack/hpack_huffman_decoder.cc
diff --git a/net/spdy/core/hpack/hpack_huffman_decoder.cc b/net/spdy/core/hpack/hpack_huffman_decoder.cc
index 85135795dfb16054db7ca9bb431e3dd637daf569..4b5bee0732b593ea2b2180db158b53e57bf692d4 100644
--- a/net/spdy/core/hpack/hpack_huffman_decoder.cc
+++ b/net/spdy/core/hpack/hpack_huffman_decoder.cc
@@ -158,7 +158,7 @@ const uint8_t kCanonicalToSymbol[] = {
 };
 // clang-format on
 
-#if DCHECK_IS_ON()
+#if DCHECK_IS_ON() || DVLOG_IS_ON()
 
 // Only used in DLOG.
 bool IsEOSPrefix(HuffmanWord bits, HuffmanCodeLength bits_available) {
@@ -171,7 +171,7 @@ bool IsEOSPrefix(HuffmanWord bits, HuffmanCodeLength bits_available) {
   return bits == expected;
 }
 
-#endif  // DCHECK_IS_ON()
+#endif  // DCHECK_IS_ON() || DVLOG_IS_ON()
 
 }  // namespace