Update from https://crrev.com/327068

base/sys_info_chromeos.cc

 // Copyright (c) 2012 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 "base/sys_info.h"
 
 #include "base/basictypes.h"
 #include "base/environment.h"
 #include "base/files/file.h"
 #include "base/files/file_path.h"
@@ skipping 151 matching lines @@
 
 static LazyInstance<ChromeOSVersionInfo>
     g_chrome_os_version_info = LAZY_INSTANCE_INITIALIZER;
 
 ChromeOSVersionInfo& GetChromeOSVersionInfo() {
   return g_chrome_os_version_info.Get();
 }
 
 }  // namespace
 
-bool SysInfo::HasSeekPenalty(const FilePath& path, bool* has_seek_penalty) {
-  // TODO(dbeam): implement. Can we just use boards/models?
-  return false;
-}
-
 // static
 void SysInfo::OperatingSystemVersionNumbers(int32* major_version,
                                             int32* minor_version,
                                             int32* bugfix_version) {
   return GetChromeOSVersionInfo().GetVersionNumbers(
       major_version, minor_version, bugfix_version);
 }
 
 // static
 const SysInfo::LsbReleaseMap& SysInfo::GetLsbReleaseMap() {
@@ skipping 28 matching lines @@
 void SysInfo::SetChromeOSVersionInfoForTest(const std::string& lsb_release,
                                             const Time& lsb_release_time) {
   scoped_ptr<Environment> env(Environment::Create());
   env->SetVar(kLsbReleaseKey, lsb_release);
   env->SetVar(kLsbReleaseTimeKey,
               DoubleToString(lsb_release_time.ToDoubleT()));
   g_chrome_os_version_info.Get().Parse();
 }
 
 }  // namespace base