Bug 1451008 - Disable perfherder reporting for microbenchmarks on asan builds r=froydnj

MozReview-Commit-ID: HZLU6gsx7Sq

--HG--
extra : rebase_source : b02b507173dd0a36af8fddbae20827be648c7ae2

testing/gtest/mozilla/MozGTestBench.cpp

@@ -18,7 +18,7 @@ namespace mozilla {
 void GTestBench(const char* aSuite, const char* aName,
                 const std::function<void()>& aTest)
 {
-#ifdef DEBUG
+#if defined(DEBUG) || defined(MOZ_ASAN)
   // Run the test to make sure that it doesn't fail but don't log
   // any measurements since it's not an optimized build.
   aTest();