Update from https://crrev.com/304121

sandbox/linux/syscall_broker/broker_process.h

Index: sandbox/linux/syscall_broker/broker_process.h
diff --git a/sandbox/linux/syscall_broker/broker_process.h b/sandbox/linux/syscall_broker/broker_process.h
index d5b521b996c622801eb6f29f760c32bd4617cbb9..50e7eee034ad2f955b1d9d7a551d3d8df53f225c 100644
--- a/sandbox/linux/syscall_broker/broker_process.h
+++ b/sandbox/linux/syscall_broker/broker_process.h
@@ -19,8 +19,8 @@
 namespace sandbox {
 
 namespace syscall_broker {
+
 class BrokerClient;
-}
 
 // Create a new "broker" process to which we can send requests via an IPC
 // channel by forking the current process.
@@ -68,21 +68,24 @@ class SANDBOX_EXPORT BrokerProcess {
   int broker_pid() const { return broker_pid_; }
 
  private:
+  friend class BrokerProcessTestHelper;
+
+  // Close the IPC channel with the other party. This should only be used
+  // by tests an none of the class methods should be used afterwards.
+  void CloseChannel();
+
   bool initialized_;  // Whether we've been through Init() yet.
-  bool is_child_;     // Whether we're the child (broker process).
-  bool fast_check_in_client_;
-  bool quiet_failures_for_tests_;
+  const bool fast_check_in_client_;
+  const bool quiet_failures_for_tests_;
   pid_t broker_pid_;                     // The PID of the broker (child).
   syscall_broker::BrokerPolicy policy_;  // The sandboxing policy.
-  scoped_ptr<syscall_broker::BrokerClient>
-      broker_client_;  // Can only exist if is_child_ is true.
+  scoped_ptr<syscall_broker::BrokerClient> broker_client_;
 
-  int ipc_socketpair_;  // Our communication channel to parent or child.
   DISALLOW_COPY_AND_ASSIGN(BrokerProcess);
-
-  friend class BrokerProcessTestHelper;
 };
 
+}  // namespace syscall_broker
+
 }  // namespace sandbox
 
 #endif  // SANDBOX_LINUX_SERVICES_BROKER_PROCESS_H_