More const int definitions for VC++

base/time/time_win.cc

Index: base/time/time_win.cc
diff --git a/base/time/time_win.cc b/base/time/time_win.cc
index bc058040d0c7b5a23923383741bbc811713c6485..c6281f9ee215d3b2da519385ee5d0b3881f8ef26 100644
--- a/base/time/time_win.cc
+++ b/base/time/time_win.cc
@@ -131,6 +131,11 @@ uint64 QPCNowRaw() {
 // static
 const int64 Time::kTimeTToMicrosecondsOffset = INT64_C(11644473600000000);
 
+// VS 2015 and above allow these definitions and in this case require them

[danakj, 2015/10/30 20:23:30]

nit: period

[brucedawson, 2015/10/30 20:36:59]

Done.

+#if _MSC_VER >= 1900
+const int64 base::Time::kQPCOverflowThreshold;

[danakj, 2015/10/30 20:23:30]

Other statics that have storage seem to be initialized at the storage site
instead of in the header. Is there a reason to not unconditionally define this
storage and initialize it here also?

This came up in the static vs enum class discussion on chromium-dev and I
thought the outcome there was to always define storage for statics:
https://groups.google.com/a/chromium.org/d/msg/chromium-dev/hDqJ4KBVqog/cQu6D...

+#endif
+
 // static
 Time Time::Now() {
   if (initial_time == 0)