Revert of Return Windows error code when create-process fails.

chrome/installer/mini_installer/configuration.h

Index: chrome/installer/mini_installer/configuration.h
diff --git a/chrome/installer/mini_installer/configuration.h b/chrome/installer/mini_installer/configuration.h
index c0d9b1990fc17efc88c925917205cd4f2d47405c..1c75960d693acafad61d44912c92b87c36d81067 100644
--- a/chrome/installer/mini_installer/configuration.h
+++ b/chrome/installer/mini_installer/configuration.h
@@ -6,8 +6,6 @@
 #define CHROME_INSTALLER_MINI_INSTALLER_CONFIGURATION_H_
 
 #include <windows.h>
-
-#include "chrome/installer/mini_installer/mini_string.h"
 
 namespace mini_installer {
 
@@ -75,19 +73,9 @@
   bool is_system_level_;
   const wchar_t* previous_version_;
 
- protected:
-  typedef StackString<128> ValueString;
-
-  // Virtual for testing.
-  virtual bool ReadClientStateRegistryValue(
-      const HKEY root_key, const wchar_t* app_guid,
-      LONG* retval, ValueString& value);
-
  private:
   Configuration(const Configuration&);
   Configuration& operator=(const Configuration&);
-
-  void SetChromeAppGuid();
 };
 
 }  // namespace mini_installer