[Sync] Use right define for disabled passwords sync perf test

Fixes r112376.

BUG=105999
TEST=

Review URL: http://codereview.chromium.org/8773012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@112482 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/sync/test/integration/performance/passwords_sync_perf_test.cc

@@ -72,7 +72,7 @@ std::string PasswordsSyncPerfTest::NextPassword() {
 }
 
 // Flaky on Windows, timing out on Mac, see http://crbug.com/105999
-#if defined(OS_WIN) || defined(OS_MAC)
+#if defined(OS_WIN) || defined(OS_MACOSX)
 #define MAYBE_P0 DISABLED_P0
 #else
 #define MAYBE_P0 P0