Remove enable_priority_dependencies.

net/http/http_network_session.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_HTTP_HTTP_NETWORK_SESSION_H_
 #define NET_HTTP_HTTP_NETWORK_SESSION_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 83 matching lines @@
     size_t spdy_stream_max_recv_window_size;
     // Source of time for SPDY connections.
     SpdySessionPool::TimeFunc time_func;
     // Whether to enable HTTP/2 Alt-Svc entries with hostname different than
     // that of the origin.
     bool enable_http2_alternative_service_with_different_host;
     // Whether to enable QUIC Alt-Svc entries with hostname different than that
     // of the origin.
     bool enable_quic_alternative_service_with_different_host;
 
-    // Enable setting of HTTP/2 dependencies based on priority.
-    bool enable_priority_dependencies;
-
     // Enables QUIC support.
     bool enable_quic;
     // Disable QUIC if a connection times out with open streams.
     bool disable_quic_on_timeout_with_open_streams;
     // Instruct QUIC to use consistent ephemeral ports when talking to
     // the same server.
     bool enable_quic_port_selection;
     // Disables QUIC's 0-RTT behavior.
     bool quic_always_require_handshake_confirmation;
     // Disables QUIC connection pooling.
@@ skipping 186 matching lines @@
   bool enabled_protocols_[NUM_VALID_ALTERNATE_PROTOCOLS];
 
   Params params_;
 
   std::unique_ptr<base::MemoryPressureListener> memory_pressure_listener_;
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_NETWORK_SESSION_H_