Don't include <sys/resource.h> on Fuchsia. (#531)

src/benchmark.cc

@@ -17,7 +17,9 @@
 #include "internal_macros.h"
 
 #ifndef BENCHMARK_OS_WINDOWS
+#ifndef BENCHMARK_OS_FUCHSIA
 #include <sys/resource.h>
+#endif
 #include <sys/time.h>
 #include <unistd.h>
 #endif

src/benchmark_register.cc

@@ -17,7 +17,9 @@
 #include "internal_macros.h"
 
 #ifndef BENCHMARK_OS_WINDOWS
+#ifndef BENCHMARK_OS_FUCHSIA
 #include <sys/resource.h>
+#endif
 #include <sys/time.h>
 #include <unistd.h>
 #endif

src/internal_macros.h

@@ -58,6 +58,8 @@
   #define BENCHMARK_OS_EMSCRIPTEN 1
 #elif defined(__rtems__)
   #define BENCHMARK_OS_RTEMS 1
+#elif defined(__Fuchsia__)
+#define BENCHMARK_OS_FUCHSIA 1
 #endif
 
 #if !__has_feature(cxx_exceptions) && !defined(__cpp_exceptions) \

src/sysinfo.cc

@@ -20,7 +20,9 @@
 #include <Windows.h>
 #else
 #include <fcntl.h>
+#ifndef BENCHMARK_OS_FUCHSIA
 #include <sys/resource.h>
+#endif
 #include <sys/time.h>
 #include <sys/types.h>  // this header must be included before 'sys/sysctl.h' to avoid compilation error on FreeBSD
 #include <unistd.h>

src/timers.cc

@@ -21,7 +21,9 @@
 #include <Windows.h>
 #else
 #include <fcntl.h>
+#ifndef BENCHMARK_OS_FUCHSIA
 #include <sys/resource.h>
+#endif
 #include <sys/time.h>
 #include <sys/types.h>  // this header must be included before 'sys/sysctl.h' to avoid compilation error on FreeBSD
 #include <unistd.h>
@@ -74,7 +76,7 @@ double MakeTime(FILETIME const& kernel_time, FILETIME const& user_time) {
           static_cast<double>(user.QuadPart)) *
          1e-7;
 }
-#else
+#elif !defined(BENCHMARK_OS_FUCHSIA)
 double MakeTime(struct rusage const& ru) {
   return (static_cast<double>(ru.ru_utime.tv_sec) +
           static_cast<double>(ru.ru_utime.tv_usec) * 1e-6 +