Restart of ceee_broker on crash.

ceee/ie/broker/broker_rpc_client.h

 // Copyright (c) 2010 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.
 //
 // Broker RPC Client.
 
 #ifndef CEEE_IE_BROKER_BROKER_RPC_CLIENT_H_
 #define CEEE_IE_BROKER_BROKER_RPC_CLIENT_H_
 
 #include <wtypes.h>
 #include "base/basictypes.h"
 
+struct IUnknown;
 // Interface for sending events.
 class IEventSender {
  public:
   virtual ~IEventSender() {}
   virtual HRESULT FireEvent(const char* event_name,
                             const char* event_args) = 0;
 };
 
-
 // Class provides communication with BrokerRpcServer.
 class BrokerRpcClient : public IEventSender {
  public:
-  BrokerRpcClient();
+  // @param allow_restarts if true client will restart server if it is somehow
+  //     gone after successful connecting. Client restarts server one time after
+  //     each successful connecting.
+  explicit BrokerRpcClient(bool allow_restarts);
   virtual ~BrokerRpcClient();
 
   // Initialize connection with server.
-  // @param start_server if true method will try to start server if it is
-  // not started yet. Usually only tests pass false here.
+  // @param start_server if true method will try to start server if it is not
+  //     started yet. Usually only tests pass false here.
   virtual HRESULT Connect(bool start_server);
 
-  // Relese connection with server
+  // Releases connection with server
   virtual void Disconnect();
 
   // Returns true if object ready for remote calls.
   virtual bool is_connected() const {
     return context_ != NULL && binding_handle_ != NULL;
   }
 
   // @name Remote calls.
   // @{
   // Calls FireEvent on server side.
   virtual HRESULT FireEvent(const char* event_name, const char* event_args);
   // Adds UMA to histograms on the server side. Either performance timings or
   // generic histogram.
   virtual HRESULT SendUmaHistogramTimes(const char* name, int sample);
   virtual HRESULT SendUmaHistogramData(const char* name,
                                        int sample,
                                        int min,
                                        int max,
                                        int bucket_count);
   // @}
 
+ protected:
+  // Starts ceee broker process. This is unittest seam.
+  virtual HRESULT StartServer(IUnknown** server);
+
  private:
   void LockContext();
   void ReleaseContext();
 
+  template<class Function, class Params>
+  HRESULT RunRpc(bool allow_restart,
+                 Function rpc_function,
+                 const Params& params);
+
   RPC_BINDING_HANDLE binding_handle_;
   // Context handle. It is required to make RPC server know number of active
   // clients.
   void* context_;
+  bool allow_restarts_;
   DISALLOW_COPY_AND_ASSIGN(BrokerRpcClient);
 };
 
 #endif  // CEEE_IE_BROKER_BROKER_RPC_CLIENT_H_