Turn on NaClBrowserTest.SuccessfulUMA under linux asan.

chrome/test/nacl/nacl_browsertest_uma.cc

Index: chrome/test/nacl/nacl_browsertest_uma.cc
diff --git a/chrome/test/nacl/nacl_browsertest_uma.cc b/chrome/test/nacl/nacl_browsertest_uma.cc
index a76776cc981c9b31a57d6f4cd9ce494d6be46a1f..69201c7b6fa89a24418e09183887e7034a26b136 100644
--- a/chrome/test/nacl/nacl_browsertest_uma.cc
+++ b/chrome/test/nacl/nacl_browsertest_uma.cc
@@ -9,14 +9,7 @@
 
 namespace {
 
-// This test fails on Linux ASAN bots: <http://crbug.com/161709>.
-#if defined(OS_LINUX) && defined(ADDRESS_SANITIZER)
-#define MAYBE_SuccessfulLoadUMA DISABLED_SuccessfulLoadUMA
-#else
-#define MAYBE_SuccessfulLoadUMA SuccessfulLoadUMA
-#endif
-
-NACL_BROWSER_TEST_F(NaClBrowserTest, MAYBE_SuccessfulLoadUMA, {
+NACL_BROWSER_TEST_F(NaClBrowserTest, SuccessfulLoadUMA, {
   // Load a NaCl module to generate UMA data.
   RunLoadTest(FILE_PATH_LITERAL("nacl_load_test.html"));