Mark ServiceProcessStateTest.ForceShutdown flaky on Linux.

BUG=84854
TEST=n/a
TBR=sanjeevr@chromium.org

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@88609 0039d316-1c4b-4281-b951-d872f2087c98

chrome/common/service_process_util_unittest.cc

@@ -30,11 +30,16 @@
 #endif
 
 #if defined(TOUCH_UI)
-// This test fails http://crbug/84854
+// This test fails http://crbug.com/84854, and is very flaky on CrOS and
+// somewhat flaky on other Linux.
 #define MAYBE_ForceShutdown FAILS_ForceShutdown
 #else
+#if defined(OS_LINUX)
+#define MAYBE_ForceShutdown FLAKY_ForceShutdown
+#else
 #define MAYBE_ForceShutdown ForceShutdown
 #endif
+#endif
 
 namespace {