crash-reporter: Use standard logging and new libchromeos Process code

system_logging_mock.h

-// Copyright (c) 2010 The Chromium OS 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 CRASH_REPORTER_SYSTEM_LOGGING_MOCK_H_
-#define CRASH_REPORTER_SYSTEM_LOGGING_MOCK_H_
-
-#include <string>
-
-#include "crash-reporter/system_logging.h"
-
-class SystemLoggingMock : public SystemLogging {
- public:
-  void Initialize(const char *ident) {}
-  virtual void LogInfo(const char *format, ...);
-  virtual void LogWarning(const char *format, ...);
-  virtual void LogError(const char *format, ...);
-  virtual void set_accumulating(bool value);
-  virtual std::string get_accumulator();
-
-  const std::string &log() { return log_; }
-
-  void clear() { log_.clear(); }
-
- private:
-  static std::string identity_;
-  std::string log_;
-  std::string ident_;
-};
-
-#endif  // CRASH_REPORTER_SYSTEM_LOGGING_H_