Revert of Disallow non-namespaced use of base::Version.

chrome/browser/obsolete_system/obsolete_system_linux.cc

 // Copyright 2015 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.
 
 #include "chrome/browser/obsolete_system/obsolete_system.h"
 
 #include <stdint.h>
 
 #include "build/build_config.h"
 
@@ skipping 13 matching lines @@
 bool ObsoleteSystem::IsObsoleteNowOrSoon() {
 #if defined(GOOGLE_CHROME_BUILD) && !defined(OS_CHROMEOS)
 #if defined(ARCH_CPU_32_BITS)
   return true;
 #else
   // Ubuntu 14.04 will be used as the next build platform, and it ships with
   // glibc 2.19. However, as of this writing, the binary produced on Ubuntu
   // 14.04 does not actually require glibc 2.19. Thus this function checks for
   // glibc 2.17 as the minimum requirement, so Ubuntu 12.04 (glibc 2.15) will
   // be considered obsolete, but RHEL 7 (glibc 2.17) will not.
-  base::Version version(gnu_get_libc_version());
+  Version version(gnu_get_libc_version());
   if (!version.IsValid() || version.components().size() != 2)
     return false;
 
   uint32_t glibc_major_version = version.components()[0];
   uint32_t glibc_minor_version = version.components()[1];
   if (glibc_major_version < 2)
     return true;
 
   return glibc_major_version == 2 && glibc_minor_version < 17;
 #endif  // defined(ARCH_CPU_32_BITS)
@@ skipping 33 matching lines @@
 }
 
 // static
 const char* ObsoleteSystem::GetLinkURL() {
 #if defined(GOOGLE_CHROME_BUILD) && !defined(OS_CHROMEOS)
   return chrome::kLinuxWheezyPreciseDeprecationURL;
 #else
   return "";
 #endif
 }