Make HttpNetworkSession a client of memory coordinator

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>
 
 #include <set>
 #include <string>
 #include <unordered_set>
 #include <vector>
 
 #include "base/bind.h"
+#include "base/memory/memory_coordinator_client.h"
 #include "base/memory/memory_pressure_monitor.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "net/base/host_port_pair.h"
 #include "net/base/net_export.h"
 #include "net/dns/host_resolver.h"
 #include "net/http/http_auth_cache.h"
 #include "net/http/http_stream_factory.h"
 #include "net/quic/chromium/quic_stream_factory.h"
@@ skipping 27 matching lines @@
 class QuicServerInfoFactory;
 class SocketPerformanceWatcherFactory;
 class SOCKSClientSocketPool;
 class SSLClientSocketPool;
 class SSLConfigService;
 class TransportClientSocketPool;
 class TransportSecurityState;
 
 // This class holds session objects used by HttpNetworkTransaction objects.
 class NET_EXPORT HttpNetworkSession
-    : NON_EXPORTED_BASE(public base::NonThreadSafe) {
+    : NON_EXPORTED_BASE(public base::NonThreadSafe),
+      public base::MemoryCoordinatorClient {
  public:
   struct NET_EXPORT Params {
     Params();
     Params(const Params& other);
     ~Params();
 
     ClientSocketFactory* client_socket_factory;
     HostResolver* host_resolver;
     CertVerifier* cert_verifier;
     ChannelIDService* channel_id_service;
@@ skipping 117 matching lines @@
     bool http_09_on_non_default_ports_enabled;
   };
 
   enum SocketPoolType {
     NORMAL_SOCKET_POOL,
     WEBSOCKET_SOCKET_POOL,
     NUM_SOCKET_POOL_TYPES
   };
 
   explicit HttpNetworkSession(const Params& params);
-  ~HttpNetworkSession();
+  ~HttpNetworkSession() override;
 
   HttpAuthCache* http_auth_cache() { return &http_auth_cache_; }
   SSLClientAuthCache* ssl_client_auth_cache() {
     return &ssl_client_auth_cache_;
   }
 
   void AddResponseDrainer(HttpResponseBodyDrainer* drainer);
 
   void RemoveResponseDrainer(HttpResponseBodyDrainer* drainer);
 
@@ skipping 59 matching lines @@
 
  private:
   friend class HttpNetworkSessionPeer;
 
   ClientSocketPoolManager* GetSocketPoolManager(SocketPoolType pool_type);
 
   // Flush sockets on low memory notifications callback.
   void OnMemoryPressure(
       base::MemoryPressureListener::MemoryPressureLevel memory_pressure_level);
 
+  // base::MemoryCoordinatorClient implementation:
+  void OnMemoryStateChange(base::MemoryState state) override;
+
   NetLog* const net_log_;
   HttpServerProperties* const http_server_properties_;
   CertVerifier* const cert_verifier_;
   HttpAuthHandlerFactory* const http_auth_handler_factory_;
 
   // Not const since it's modified by HttpNetworkSessionPeer for testing.
   ProxyService* proxy_service_;
   const scoped_refptr<SSLConfigService> ssl_config_service_;
 
   HttpAuthCache http_auth_cache_;
@@ skipping 10 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_