Use HighResNow whenever possible on Windows.

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
diff --git a/content/public/common/content_switches.cc b/content/public/common/content_switches.cc
index 8ea70fd1001363ada5b3cd1c0492c1f8660af9a5..b0ac4d8eddc147b44c7a08c59330578174835d74 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -428,11 +428,6 @@ const char kEnableGpuClientTracing[]        = "enable-gpu-client-tracing";
 const char kEnableHighDpiCompositingForFixedPosition[] =
      "enable-high-dpi-fixed-position-compositing";
 
-#if defined(OS_WIN)
-// Use high resolution timers for TimeTicks.
-const char kEnableHighResolutionTime[]      = "enable-high-resolution-time";
-#endif
-
 // Enable HTML Imports
 extern const char kEnableHTMLImports[]      = "enable-html-imports";