Always use timeGetTime() for TimeTicks::Now() on Windows.

src/platform/time.h

 // Copyright 2013 the V8 project authors. 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
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 317 matching lines @@
   // This method never returns a null TimeTicks.
   static TimeTicks Now();
 
   // Returns a platform-dependent high-resolution tick count. Implementation
   // is hardware dependent and may or may not return sub-millisecond
   // resolution.  THIS CALL IS GENERALLY MUCH MORE EXPENSIVE THAN Now() AND
   // SHOULD ONLY BE USED WHEN IT IS REALLY NEEDED.
   // This method never returns a null TimeTicks.
   static TimeTicks HighResNow();
 
+  // Returns true if the high-resolution clock is working on this system.
+  static bool IsHighResClockWorking();

[Hannes Payer (out of office), 2013/10/02 11:27:25]

Can we call it IsHighResolutionClockWorking()? And also rename HighResNow to
HighResolutionNow? Using full names is suggested by the coding style guide.

[Benedikt Meurer, 2013/10/02 12:27:46]

Done.

+
   // Returns true if this object has not been initialized.
   bool IsNull() const { return ticks_ == 0; }
 
   // Converts to/from internal values. The meaning of the "internal value" is
   // completely up to the implementation, so it should be treated as opaque.
   static TimeTicks FromInternalValue(int64_t value) {
     return TimeTicks(value);
   }
   int64_t ToInternalValue() const {
     return ticks_;
@@ skipping 46 matching lines @@
   bool operator>=(const TimeTicks& other) const {
     return ticks_ >= other.ticks_;
   }
 
  private:
   // Please use Now() to create a new object. This is for internal use
   // and testing. Ticks is in microseconds.
   explicit TimeTicks(int64_t ticks) : ticks_(ticks) {}
 
   // Tick count in microseconds.
   int64_t ticks_;

[Hannes Payer (out of office), 2013/10/02 11:27:25]

Is it safe to use int64_t here? Shouldn't it be uint64_t?

[Benedikt Meurer, 2013/10/02 12:27:46]

int64_t is safe here, and compatible with what Chromium uses.

 };
 
 inline TimeTicks operator+(const TimeDelta& delta, const TimeTicks& ticks) {
   return ticks + delta;
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_PLATFORM_TIME_H_