Add crash_reporter functionality

src/platform/crash/system_logging_mock.cc

Index: src/platform/crash/system_logging_mock.cc
diff --git a/src/platform/crash/system_logging_mock.cc b/src/platform/crash/system_logging_mock.cc
new file mode 100644
index 0000000000000000000000000000000000000000..3da1956202a9b96afb07ecc25dc992cb76772813
--- /dev/null
+++ b/src/platform/crash/system_logging_mock.cc
@@ -0,0 +1,35 @@
+// 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.
+
+#include <stdarg.h>
+
+#include "base/string_util.h"
+#include "crash/system_logging_mock.h"
+
+void SystemLoggingMock::LogInfo(const char *format, ...) {
+  va_list vl;
+  va_start(vl, format);
+  log_ += ident_ + "info: ";
+  StringAppendV(&log_, format, vl);
+  log_ += "\n";
+  va_end(vl);
+}
+
+void SystemLoggingMock::LogWarning(const char *format, ...) {
+  va_list vl;
+  va_start(vl, format);
+  log_ += ident_ + "warning: ";
+  StringAppendV(&log_, format, vl);
+  log_ += "\n";
+  va_end(vl);
+}
+
+void SystemLoggingMock::LogError(const char *format, ...) {
+  va_list vl;
+  va_start(vl, format);
+  log_ += ident_ + "error: ";
+  StringAppendV(&log_, format, vl);
+  log_ += "\n";
+  va_end(vl);
+}