Enable win8 ash tests.

ash/test/ash_unittests.cc

Index: ash/test/ash_unittests.cc
diff --git a/ash/test/ash_unittests.cc b/ash/test/ash_unittests.cc
index 7374adacee902f9f9564336b727d97dc85dbbc50..7602d9a377ab8e8f066d21dcf9cd414abd6e9949 100644
--- a/ash/test/ash_unittests.cc
+++ b/ash/test/ash_unittests.cc
@@ -4,20 +4,6 @@
 
 #include "ash/test/test_suite.h"
 
-#if defined(OS_WIN)
-#include "base/command_line.h"
-#include "base/win/windows_version.h"
-#endif
-
 int main(int argc, char** argv) {
-#if defined(OS_WIN)
-  CommandLine::Init(argc, argv);
-  // Disabled on Win8 until they're passing cleanly. http://crbug.com/154081
-  // Can be optionally enabled via a command line flag (handy for developing)
-  // until such time.
-  if (base::win::GetVersion() >= base::win::VERSION_WIN8 &&
-      !CommandLine::ForCurrentProcess()->HasSwitch("ash-metro-tests"))
-    return 0;
-#endif
   return ash::test::AuraShellTestSuite(argc, argv).Run();
 }