Remove sysctl-read workarounds

base/sys_info.h

 // Copyright (c) 2008 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>
 
 namespace base {
 
 class SysInfo {
  public:
   // Return the number of logical processors/cores on the current machine.
-  // WARNING: On POSIX, this method uses static variables and is not threadsafe
-  // until it's been initialized by being called once without a race.
   static int NumberOfProcessors();
 
   // Return the number of bytes of physical memory on the current machine.
   static int64 AmountOfPhysicalMemory();
 
   // Return the number of megabytes of physical memory on the current machine.
   static int AmountOfPhysicalMemoryMB() {
     return static_cast<int>(AmountOfPhysicalMemory() / 1024 / 1024);
   }
 
@@ skipping 10 matching lines @@
   // TODO: find a better place for GetEnvVar.
   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.
-  // WARNING: On OS X, this method uses static variables and is not threadsafe
-  // until it's been initialized by being called once without a race.
   // TODO(port): Implement a Linux version of this method and enable the
   // corresponding unit test.
   static void OperatingSystemVersionNumbers(int32 *major_version,
                                             int32 *minor_version,
                                             int32 *bugfix_version);
 
   // Returns the CPU architecture of the system. Exact return value may differ
   // across platforms.
   static std::string CPUArchitecture();
 
   // Returns the pixel dimensions of the primary display via the
   // width and height parameters.
   static void GetPrimaryDisplayDimensions(int* width, int* height);
 
   // Return the number of displays.
   static int DisplayCount();
 
   // Return the smallest amount of memory (in bytes) which the VM system will
   // allocate.
   static size_t VMAllocationGranularity();
-
-#if defined(OS_MACOSX)
-  // Under the OS X Sandbox, our access to the system is limited, this call
-  // caches the system info on startup before we turn the Sandbox on.
-  // The above functions are all wired up to return the cached value so the rest
-  // of the code can call them in the Sandbox without worrying.
-  static void CacheSysInfo();
-#endif
 };
 
 }  // namespace base
 
 #endif  // BASE_SYS_INFO_H_