Cleanup in //runtime/bin

runtime/bin/utils_win.cc

Index: runtime/bin/utils_win.cc
diff --git a/runtime/bin/utils_win.cc b/runtime/bin/utils_win.cc
index 227cc243c19cabe103bc3ae8cbcc67465a69bd70..7e3cfb689a7caf953365ca083faf72e9569070d5 100644
--- a/runtime/bin/utils_win.cc
+++ b/runtime/bin/utils_win.cc
@@ -8,12 +8,11 @@
 #include <errno.h>  // NOLINT
 #include <time.h>  // NOLINT
 
+#include "bin/log.h"
 #include "bin/utils.h"
 #include "bin/utils_win.h"
-#include "bin/log.h"
 #include "platform/assert.h"
 
-
 namespace dart {
 namespace bin {
 
@@ -185,20 +184,22 @@ bool ShellUtils::GetUtf8Argv(int argc, char** argv) {
 }
 
 
+// Although win32 uses 64-bit integers for representing timestamps,
+// these are packed into a FILETIME structure. The FILETIME
+// structure is just a struct representing a 64-bit integer. The
+// TimeStamp union allows access to both a FILETIME and an integer
+// representation of the timestamp. The Windows timestamp is in
+// 100-nanosecond intervals since January 1, 1601.
+union TimeStamp {
+  FILETIME ft_;
+  int64_t t_;
+};
+
+
 static int64_t GetCurrentTimeMicros() {
   static const int64_t kTimeEpoc = 116444736000000000LL;
   static const int64_t kTimeScaler = 10;  // 100 ns to us.
 
-  // Although win32 uses 64-bit integers for representing timestamps,
-  // these are packed into a FILETIME structure. The FILETIME
-  // structure is just a struct representing a 64-bit integer. The
-  // TimeStamp union allows access to both a FILETIME and an integer
-  // representation of the timestamp. The Windows timestamp is in
-  // 100-nanosecond intervals since January 1, 1601.
-  union TimeStamp {
-    FILETIME ft_;
-    int64_t t_;
-  };
   TimeStamp time;
   GetSystemTimeAsFileTime(&time.ft_);
   return (time.t_ - kTimeEpoc) / kTimeScaler;