[NOT TO COMMIT!] Merge Chromium-specific changes in tcmalloc thru. the original gperftools r136.

third_party/tcmalloc/chromium/src/base/cycleclock.h

 // Copyright (c) 2004, Google Inc.
 // All rights reserved.
 // 
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 // 
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
@@ skipping 49 matching lines @@
 // __rdtsc intrinsic, declared in <intrin.h>.  Unfortunately, in some
 // environments, <windows.h> and <intrin.h> have conflicting
 // declarations of some other intrinsics, breaking compilation.
 // Therefore, we simply declare __rdtsc ourselves. See also
 // http://connect.microsoft.com/VisualStudio/feedback/details/262047
 #if defined(_MSC_VER) && !defined(_M_IX86)
 extern "C" uint64 __rdtsc();
 #pragma intrinsic(__rdtsc)
 #endif
 #if defined(ARMV3) || defined(__mips__)
+#ifdef HAVE_SYS_TIME_H
 #include <sys/time.h>
 #endif
+#endif
 
 // NOTE: only i386 and x86_64 have been well tested.
 // PPC, sparc, alpha, and ia64 are based on
 //    http://peter.kuscsik.com/wordpress/?p=14
 // with modifications by m3b.  See also
 //    https://setisvn.ssl.berkeley.edu/svn/lib/fftw-3.0.1/kernel/cycle.h
 struct CycleClock {
   // This should return the number of cycles since power-on.  Thread-safe.
   static inline int64 Now() {
 #if defined(__MACH__) && defined(__APPLE__)
@@ skipping 72 matching lines @@
 // The soft failover to a generic implementation is automatic only for ARM.
 // For other platforms the developer is expected to make an attempt to create
 // a fast implementation and use generic version if nothing better is available.
 #error You need to define CycleTimer for your O/S and CPU
 #endif
   }
 };
 
 
 #endif  // GOOGLE_BASE_CYCLECLOCK_H_