Disabling some NaCl-related tests on Linux for flakiness

chrome/test/nacl/nacl_browsertest_util.h

Index: chrome/test/nacl/nacl_browsertest_util.h
diff --git a/chrome/test/nacl/nacl_browsertest_util.h b/chrome/test/nacl/nacl_browsertest_util.h
index 93b00ed3f3acaf77215e602f07180c8a54e68f82..5075f61eeed151810370bed00c81385a33e9e3ea 100644
--- a/chrome/test/nacl/nacl_browsertest_util.h
+++ b/chrome/test/nacl/nacl_browsertest_util.h
@@ -195,10 +195,11 @@ class NaClBrowserTestGLibcExtension : public NaClBrowserTestGLibc {
 
 // Similar to MAYBE_NONSFI, this is available only on x86-32, x86-64 or
 // ARM linux.
+// TODO(crbug.com/579804) -- tests disabled on Linux for flakiness.
 #if defined(OS_LINUX) && \
     (defined(ARCH_CPU_X86_FAMILY) || defined(ARCH_CPU_ARMEL)) && \
     !defined(DISABLE_NACL_BROWSERTESTS)
-#  define MAYBE_PNACL_NONSFI(test_case) test_case
+#  define MAYBE_PNACL_NONSFI(test_case) DISABLED_##test_case
 #else
 #  define MAYBE_PNACL_NONSFI(test_case) DISABLED_##test_case
 #endif