base: Get rid of the deprecated SysInfo::GetEnvVar.

base/sys_info.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.
 
 #ifndef BASE_SYS_INFO_H_
 #define BASE_SYS_INFO_H_
 
 #include "base/basictypes.h"
 
 #include <string>
@@ skipping 12 matching lines @@
 
   // Return the number of megabytes of physical memory on the current machine.
   static int AmountOfPhysicalMemoryMB() {
     return static_cast<int>(AmountOfPhysicalMemory() / 1024 / 1024);
   }
 
   // Return the available disk space in bytes on the volume containing |path|,
   // or -1 on failure.
   static int64 AmountOfFreeDiskSpace(const FilePath& path);
 
-  // Return the value of the given environment variable
-  // or an empty string if not defined.
-  // DEPRECATED in favor of EnvVarGetter in base/env_var.h.
-  static std::wstring GetEnvVar(const wchar_t* var);
-
   // Returns the name of the host operating system.
   static std::string OperatingSystemName();
 
   // Returns the version of the host operating system.
   static std::string OperatingSystemVersion();
 
   // Retrieves detailed numeric values for the OS version.
   // TODO(port): Implement a Linux version of this method and enable the
   // corresponding unit test.
   static void OperatingSystemVersionNumbers(int32 *major_version,
@@ skipping 30 matching lines @@
   static void ParseLsbRelease(const std::string& lsb_release,
                               int32 *major_version,
                               int32 *minor_version,
                               int32 *bugfix_version);
 #endif
 };
 
 }  // namespace base
 
 #endif  // BASE_SYS_INFO_H_