Exclude OutOfProcessPPAPITest.Var test under Mac Valgrind.

It was enabled in r112775.

TBR=brettw@chromium.org
BUG=87625,104535
TEST=mac valgrind bots go greener

Review URL: http://codereview.chromium.org/8796008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@112942 0039d316-1c4b-4281-b951-d872f2087c98

tools/valgrind/gtest_exclude/ui_tests.gtest_mac.txt

@@ -273,6 +273,7 @@ AutomationProxyTest4.BooleanValueIsEchoedByDomAutomationController
 
 # http://crbug.com/87625
 PPAPITest.Var
+OutOfProcessPPAPITest.Var
 
 # http://crbug.com/87766
 PPAPITest.URLLoader