Move more client network code to //blimp/client/core/session.

blimp/client/core/session/client_network_components.h

Index: blimp/client/core/session/client_network_components.h
diff --git a/blimp/client/core/session/client_network_components.h b/blimp/client/core/session/client_network_components.h
new file mode 100644
index 0000000000000000000000000000000000000000..bae00bcd2182af150094fd11fbf54485a3e4e1dd
--- /dev/null
+++ b/blimp/client/core/session/client_network_components.h
@@ -0,0 +1,63 @@
+// Copyright 2016 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 BLIMP_CLIENT_CORE_SESSION_CLIENT_NETWORK_COMPONENTS_H_
+#define BLIMP_CLIENT_CORE_SESSION_CLIENT_NETWORK_COMPONENTS_H_
+
+#include <memory>
+
+#include "base/threading/thread_checker.h"
+#include "blimp/client/core/session/assignment_source.h"
+#include "blimp/client/core/session/network_event_observer.h"
+#include "blimp/net/blimp_connection.h"
+#include "blimp/net/blimp_connection_statistics.h"
+#include "blimp/net/browser_connection_handler.h"
+#include "blimp/net/client_connection_manager.h"
+
+namespace blimp {
+namespace client {
+
+// This class's functions and destruction must all be invoked on the IO thread
+// by the owner. It is OK to construct the object on the main thread. The
+// ThreadChecker is initialized in the call to Initialize.
+class ClientNetworkComponents : public ConnectionHandler,
+                                public ConnectionErrorObserver {
+ public:
+  // Can be created on any thread.
+  ClientNetworkComponents(
+      std::unique_ptr<NetworkEventObserver> observer,
+      std::unique_ptr<BlimpConnectionStatistics> blimp_connection_statistics);
+  ~ClientNetworkComponents() override;
+
+  // Sets up network components.
+  void Initialize();
+
+  // Starts the connection to the engine using the given |assignment|.
+  // It is required to first call Initialize.
+  void ConnectWithAssignment(const Assignment& assignment);
+
+  BrowserConnectionHandler* GetBrowserConnectionHandler();
+
+ private:
+  // ConnectionHandler implementation.
+  void HandleConnection(std::unique_ptr<BlimpConnection> connection) override;
+
+  // ConnectionErrorObserver implementation.
+  void OnConnectionError(int error) override;
+
+  // The ThreadChecker is reset during the call to Initialize.
+  base::ThreadChecker io_thread_checker_;
+
+  BrowserConnectionHandler connection_handler_;
+  std::unique_ptr<ClientConnectionManager> connection_manager_;
+  std::unique_ptr<NetworkEventObserver> network_observer_;
+  std::unique_ptr<BlimpConnectionStatistics> connection_statistics_;
+
+  DISALLOW_COPY_AND_ASSIGN(ClientNetworkComponents);
+};
+
+}  // namespace client
+}  // namespace blimp
+
+#endif  // BLIMP_CLIENT_CORE_SESSION_CLIENT_NETWORK_COMPONENTS_H_