Fix passing of --special-command flag in test wrapper.

R=jkummerow@chromium.org

Review URL: http://codereview.chromium.org/8056004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9450 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

tools/test-wrapper-gypbuild.py

@@ -169,7 +169,7 @@ def PassOnOptions(options):
   if options.snapshot:
     result += ['--snapshot']
   if options.special_command:
-    result += ['--special-command=' + options.special_command]
+    result += ['--special-command="%s"' % options.special_command]
   if options.valgrind:
     result += ['--valgrind']
   if options.cat: