win: clock implementation

util/misc/clock.h

Index: util/misc/clock.h
diff --git a/util/misc/clock.h b/util/misc/clock.h
index 88bdcd508c16d3bbed1def82b08b1c44c22e2306..a07e12a6ee154d0b20e5c71a94fae3c8651313f5 100644
--- a/util/misc/clock.h
+++ b/util/misc/clock.h
@@ -17,6 +17,8 @@
 
 #include <stdint.h>
 
+#include "build/build_config.h"
+
 namespace crashpad {
 
 //! \brief Returns the value of the system’s monotonic clock.
@@ -32,6 +34,8 @@ namespace crashpad {
 //! \return The value of the system’s monotonic clock, in nanoseconds.
 uint64_t ClockMonotonicNanoseconds();
 
+#if !defined(OS_WIN)  // Not implemented on Windows yet.
+
 //! \brief Sleeps for the specified duration.
 //!
 //! \param[in] nanoseconds The number of nanoseconds to sleep. The actual sleep
@@ -41,6 +45,8 @@ uint64_t ClockMonotonicNanoseconds();
 //! being interrupted by a signal.
 void SleepNanoseconds(uint64_t nanoseconds);
 
+#endif
+
 }  // namespace crashpad
 
 #endif  // CRASHPAD_UTIL_MISC_CLOCK_H_