Only include compile-only win64 trybot in default set.

BUG=chromium:353487
LOG=n
R=jkummerow@chromium.org
TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/570113002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23956 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

PRESUBMIT.py

@@ -180,6 +180,6 @@ def GetPreferredTryMasters(project, change):
       'v8_linux_layout_dbg': set(['defaulttests']),
       'v8_mac_rel': set(['defaulttests']),
       'v8_win_rel': set(['defaulttests']),
-      'v8_win64_rel': set(['defaulttests']),
+      'v8_win64_compile_rel': set(['defaulttests']),
     },
   }