nanobench on Windows: try compiler barriers around timer instead.

gyp/bench.gyp

 # GYP file to build performance testbench.
 #
 {
   'includes': [
     'apptype_console.gypi',
   ],
   'targets': [
     {
       'target_name': 'bench',
       'type': 'executable',
@@ skipping 30 matching lines @@
         '../bench/ResultsWriter.cpp',
       ],
       'includes': [ 'bench.gypi' ],
       'dependencies': [
         'flags.gyp:flags',
         'jsoncpp.gyp:jsoncpp',
         'skia_lib.gyp:skia_lib',
         'tools.gyp:crash_handler',
         'tools.gyp:timer',
       ],
-
-      # Experiment to see if LTCG is the key difference leading to Windows infinite loops.
-      'msvs_settings': { 'VCLinkerTool': { 'LinkTimeCodeGeneration': '0' } },
     },
   ],
 }