Change to Hi Res timers on Windows....

base/time.h

 // Copyright (c) 2006-2008 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.
 
 // Time represents an absolute point in time, internally represented as
 // microseconds (s/1,000,000) since a platform-dependent epoch.  Each
 // platform's epoch, along with other system-dependent clock interface
 // routines, is defined in time_PLATFORM.cc.
 //
 // TimeDelta represents a duration of time, internally represented in
@@ skipping 330 matching lines @@
 }
 
 // TimeTicks ------------------------------------------------------------------
 
 class TimeTicks {
  public:
   TimeTicks() : ticks_(0) {
   }
 
   // Platform-dependent tick count representing "right now."
-  // The resolution of this clock is ~1-5ms.  Resolution varies depending
+  // The resolution of this clock is ~1-15ms.  Resolution varies depending
   // on hardware/operating system configuration.
   static TimeTicks Now();
 
-  // Returns a platform-dependent high-resolution tick count. IT IS BROKEN ON
-  // SOME HARDWARE and is designed to be used for profiling and perf testing
-  // only (see the impl for more information).
-  static TimeTicks UnreliableHighResNow();
-
+  // 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.
+  static TimeTicks HighResNow();
 
   // Returns true if this object has not been initialized.
   bool is_null() const {
     return ticks_ == 0;
   }
 
   // Returns the internal numeric value of the TimeTicks object.
   int64 ToInternalValue() const {
     return ticks_;
   }
@@ skipping 62 matching lines @@
   typedef DWORD (*TickFunctionType)(void);
   static TickFunctionType SetMockTickFunction(TickFunctionType ticker);
 #endif
 };
 
 inline TimeTicks TimeDelta::operator+(TimeTicks t) const {
   return TimeTicks(t.ticks_ + delta_);
 }
 
 #endif  // BASE_TIME_H_