Removed lines left by mistake in previous patch(https://codereview.chromium.org/1080673004/).

net/base/load_flags_list.h

Index: net/base/load_flags_list.h
diff --git a/net/base/load_flags_list.h b/net/base/load_flags_list.h
index 7876a8c32786efdb7fe16b62e984ac3bf352fcf3..8f3fe0e08c4a382acd76e18734c3ab90ae3dee84 100644
--- a/net/base/load_flags_list.h
+++ b/net/base/load_flags_list.h
@@ -25,11 +25,6 @@ LOAD_FLAG(PREFERRING_CACHE, 1 << 2)
 // resource from the cache (or some equivalent local store).
 LOAD_FLAG(ONLY_FROM_CACHE, 1 << 3)
 
-// Indicate that if the request fails at the network level in a way that
-// indicates the source is unreachable, the request should fail over
-// to as if LOAD_PREFERRING_CACHE had been set.
-LOAD_FLAG(FROM_CACHE_IF_OFFLINE, 1 << 4)
-
 // This is a navigation that will not use the cache at all.  It does not
 // impact the HTTP request headers.
 LOAD_FLAG(DISABLE_CACHE, 1 << 4)