Fix the gyp file to include the ENABLE_VMSTATE_TRACKING

Review URL: http://codereview.chromium.org/1564021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4369 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

tools/gyp/v8.gyp

@@ -37,6 +37,7 @@
     'defines': [
       'ENABLE_LOGGING_AND_PROFILING',
       'ENABLE_DEBUGGER_SUPPORT',
+      'ENABLE_VMSTATE_TRACKING',
     ],
     'conditions': [
       ['target_arch=="arm"', {